Home / 15,265.47-21,057.75-8,891.31

Finding the Fourth Proportional to 15,265.47, 21,057.75 and 8,891.31

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Solution

The fourth proportional to 15,265.47, 21,057.75 and 8,891.31 is: 12,265.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,265.47 : 21,057.75 = 8,891.31 : x
  2. Step 2: Convert to fraction form
    15,265.47/21,057.75 = 8,891.31/x
  3. Step 3: Cross multiply
    15,265.47x = 21,057.75 × 8,891.31
  4. Step 4: Simplify right side
    15,265.47x = 187,230,983.15
  5. Step 5: Solve for x
    x = 187,230,983.15/15,265.47
  6. Step 6: Final answer
    x = 12,265.00

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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.