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Finding the Fourth Proportional to 10,332.78, 15,503.56 and 5,647.32

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Solution

The fourth proportional to 10,332.78, 15,503.56 and 5,647.32 is: 8,473.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,332.78 : 15,503.56 = 5,647.32 : x
  2. Step 2: Convert to fraction form
    10,332.78/15,503.56 = 5,647.32/x
  3. Step 3: Cross multiply
    10,332.78x = 15,503.56 × 5,647.32
  4. Step 4: Simplify right side
    10,332.78x = 87,553,542.45
  5. Step 5: Solve for x
    x = 87,553,542.45/10,332.78
  6. Step 6: Final answer
    x = 8,473.38

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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.