Home / 21,238,331.10-31,864,242.33-8,948,790.78

Finding the Fourth Proportional to 21,238,331.10, 31,864,242.33 and 8,948,790.78

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Solution

The fourth proportional to 21,238,331.10, 31,864,242.33 and 8,948,790.78 is: 13,426,028.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,238,331.10 : 31,864,242.33 = 8,948,790.78 : x
  2. Step 2: Convert to fraction form
    21,238,331.10/31,864,242.33 = 8,948,790.78/x
  3. Step 3: Cross multiply
    21,238,331.10x = 31,864,242.33 × 8,948,790.78
  4. Step 4: Simplify right side
    21,238,331.10x = 285,146,437,974,389.69
  5. Step 5: Solve for x
    x = 285,146,437,974,389.69/21,238,331.10
  6. Step 6: Final answer
    x = 13,426,028.47

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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.