Home / 15,800.89-21,805.36-8,727.43

Finding the Fourth Proportional to 15,800.89, 21,805.36 and 8,727.43

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Solution

The fourth proportional to 15,800.89, 21,805.36 and 8,727.43 is: 12,043.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,800.89 : 21,805.36 = 8,727.43 : x
  2. Step 2: Convert to fraction form
    15,800.89/21,805.36 = 8,727.43/x
  3. Step 3: Cross multiply
    15,800.89x = 21,805.36 × 8,727.43
  4. Step 4: Simplify right side
    15,800.89x = 190,304,753.02
  5. Step 5: Solve for x
    x = 190,304,753.02/15,800.89
  6. Step 6: Final answer
    x = 12,043.93

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1.5x scale

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.