Home / 21,275,145,195.90-31,912,717,793.85-12,894,533,202.30

Finding the Fourth Proportional to 21,275,145,195.90, 31,912,717,793.85 and 12,894,533,202.30

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Solution

The fourth proportional to 21,275,145,195.90, 31,912,717,793.85 and 12,894,533,202.30 is: 19,341,799,803.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,145,195.90 : 31,912,717,793.85 = 12,894,533,202.30 : x
  2. Step 2: Convert to fraction form
    21,275,145,195.90/31,912,717,793.85 = 12,894,533,202.30/x
  3. Step 3: Cross multiply
    21,275,145,195.90x = 31,912,717,793.85 × 12,894,533,202.30
  4. Step 4: Simplify right side
    21,275,145,195.90x = 411,499,599,168,428,769,280
  5. Step 5: Solve for x
    x = 411,499,599,168,428,769,280/21,275,145,195.90
  6. Step 6: Final answer
    x = 19,341,799,803.45

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.