Home / 20,557.66-28,369.52-11,126.24

Finding the Fourth Proportional to 20,557.66, 28,369.52 and 11,126.24

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Solution

The fourth proportional to 20,557.66, 28,369.52 and 11,126.24 is: 15,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.66 : 28,369.52 = 11,126.24 : x
  2. Step 2: Convert to fraction form
    20,557.66/28,369.52 = 11,126.24/x
  3. Step 3: Cross multiply
    20,557.66x = 28,369.52 × 11,126.24
  4. Step 4: Simplify right side
    20,557.66x = 315,646,088.20
  5. Step 5: Solve for x
    x = 315,646,088.20/20,557.66
  6. Step 6: Final answer
    x = 15,354.18

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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.