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Finding the Fourth Proportional to 42,295.92, 63,430.92 and 11,127.12

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Solution

The fourth proportional to 42,295.92, 63,430.92 and 11,127.12 is: 16,687.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,295.92 : 63,430.92 = 11,127.12 : x
  2. Step 2: Convert to fraction form
    42,295.92/63,430.92 = 11,127.12/x
  3. Step 3: Cross multiply
    42,295.92x = 63,430.92 × 11,127.12
  4. Step 4: Simplify right side
    42,295.92x = 705,803,458.55
  5. Step 5: Solve for x
    x = 705,803,458.55/42,295.92
  6. Step 6: Final answer
    x = 16,687.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.