Home / 21,247.31-31,834.07-14,908.78

Finding the Fourth Proportional to 21,247.31, 31,834.07 and 14,908.78

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Solution

The fourth proportional to 21,247.31, 31,834.07 and 14,908.78 is: 22,337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,247.31 : 31,834.07 = 14,908.78 : x
  2. Step 2: Convert to fraction form
    21,247.31/31,834.07 = 14,908.78/x
  3. Step 3: Cross multiply
    21,247.31x = 31,834.07 × 14,908.78
  4. Step 4: Simplify right side
    21,247.31x = 474,607,167.29
  5. Step 5: Solve for x
    x = 474,607,167.29/21,247.31
  6. Step 6: Final answer
    x = 22,337.28

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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.