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Finding the Fourth Proportional to 42,663.60, 63,990.96 and 11,496.96

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Solution

The fourth proportional to 42,663.60, 63,990.96 and 11,496.96 is: 17,244.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,663.60 : 63,990.96 = 11,496.96 : x
  2. Step 2: Convert to fraction form
    42,663.60/63,990.96 = 11,496.96/x
  3. Step 3: Cross multiply
    42,663.60x = 63,990.96 × 11,496.96
  4. Step 4: Simplify right side
    42,663.60x = 735,701,507.48
  5. Step 5: Solve for x
    x = 735,701,507.48/42,663.60
  6. Step 6: Final answer
    x = 17,244.24

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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.