Home / 20,566.36-28,381.62-11,134.90

Finding the Fourth Proportional to 20,566.36, 28,381.62 and 11,134.90

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Solution

The fourth proportional to 20,566.36, 28,381.62 and 11,134.90 is: 15,366.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.36 : 28,381.62 = 11,134.90 : x
  2. Step 2: Convert to fraction form
    20,566.36/28,381.62 = 11,134.90/x
  3. Step 3: Cross multiply
    20,566.36x = 28,381.62 × 11,134.90
  4. Step 4: Simplify right side
    20,566.36x = 316,026,500.54
  5. Step 5: Solve for x
    x = 316,026,500.54/20,566.36
  6. Step 6: Final answer
    x = 15,366.19

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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.