Home / 21,275,145,212.40-31,912,717,818.60-12,894,533,218.80

Finding the Fourth Proportional to 21,275,145,212.40, 31,912,717,818.60 and 12,894,533,218.80

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Solution

The fourth proportional to 21,275,145,212.40, 31,912,717,818.60 and 12,894,533,218.80 is: 19,341,799,828.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,145,212.40 : 31,912,717,818.60 = 12,894,533,218.80 : x
  2. Step 2: Convert to fraction form
    21,275,145,212.40/31,912,717,818.60 = 12,894,533,218.80/x
  3. Step 3: Cross multiply
    21,275,145,212.40x = 31,912,717,818.60 × 12,894,533,218.80
  4. Step 4: Simplify right side
    21,275,145,212.40x = 411,499,600,014,128,316,416
  5. Step 5: Solve for x
    x = 411,499,600,014,128,316,416/21,275,145,212.40
  6. Step 6: Final answer
    x = 19,341,799,828.20

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1.5x scale

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.