Home / 20,557.92-28,369.92-11,126.48

Finding the Fourth Proportional to 20,557.92, 28,369.92 and 11,126.48

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Solution

The fourth proportional to 20,557.92, 28,369.92 and 11,126.48 is: 15,354.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.92 : 28,369.92 = 11,126.48 : x
  2. Step 2: Convert to fraction form
    20,557.92/28,369.92 = 11,126.48/x
  3. Step 3: Cross multiply
    20,557.92x = 28,369.92 × 11,126.48
  4. Step 4: Simplify right side
    20,557.92x = 315,657,270.29
  5. Step 5: Solve for x
    x = 315,657,270.29/20,557.92
  6. Step 6: Final answer
    x = 15,354.54

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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.