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Finding the Fourth Proportional to 56,553.44, 84,829.28 and 13,859.28

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Solution

The fourth proportional to 56,553.44, 84,829.28 and 13,859.28 is: 20,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,553.44 : 84,829.28 = 13,859.28 : x
  2. Step 2: Convert to fraction form
    56,553.44/84,829.28 = 13,859.28/x
  3. Step 3: Cross multiply
    56,553.44x = 84,829.28 × 13,859.28
  4. Step 4: Simplify right side
    56,553.44x = 1,175,672,674.42
  5. Step 5: Solve for x
    x = 1,175,672,674.42/56,553.44
  6. Step 6: Final answer
    x = 20,788.70

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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.