Home / 20,557.60-28,369.46-11,126.14

Finding the Fourth Proportional to 20,557.60, 28,369.46 and 11,126.14

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Solution

The fourth proportional to 20,557.60, 28,369.46 and 11,126.14 is: 15,354.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.60 : 28,369.46 = 11,126.14 : x
  2. Step 2: Convert to fraction form
    20,557.60/28,369.46 = 11,126.14/x
  3. Step 3: Cross multiply
    20,557.60x = 28,369.46 × 11,126.14
  4. Step 4: Simplify right side
    20,557.60x = 315,642,583.68
  5. Step 5: Solve for x
    x = 315,642,583.68/20,557.60
  6. Step 6: Final answer
    x = 15,354.06

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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.