Home / 15,387.02-21,234.12-9,731.87

Finding the Fourth Proportional to 15,387.02, 21,234.12 and 9,731.87

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Solution

The fourth proportional to 15,387.02, 21,234.12 and 9,731.87 is: 13,430.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.02 : 21,234.12 = 9,731.87 : x
  2. Step 2: Convert to fraction form
    15,387.02/21,234.12 = 9,731.87/x
  3. Step 3: Cross multiply
    15,387.02x = 21,234.12 × 9,731.87
  4. Step 4: Simplify right side
    15,387.02x = 206,647,695.40
  5. Step 5: Solve for x
    x = 206,647,695.40/15,387.02
  6. Step 6: Final answer
    x = 13,430.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.