Home / 21,275,145,222.15-31,912,717,833.23-12,894,533,228.55

Finding the Fourth Proportional to 21,275,145,222.15, 31,912,717,833.23 and 12,894,533,228.55

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Solution

The fourth proportional to 21,275,145,222.15, 31,912,717,833.23 and 12,894,533,228.55 is: 19,341,799,842.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,275,145,222.15 : 31,912,717,833.23 = 12,894,533,228.55 : x
  2. Step 2: Convert to fraction form
    21,275,145,222.15/31,912,717,833.23 = 12,894,533,228.55/x
  3. Step 3: Cross multiply
    21,275,145,222.15x = 31,912,717,833.23 × 12,894,533,228.55
  4. Step 4: Simplify right side
    21,275,145,222.15x = 411,499,600,513,859,846,144
  5. Step 5: Solve for x
    x = 411,499,600,513,859,846,144/21,275,145,222.15
  6. Step 6: Final answer
    x = 19,341,799,842.83

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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.