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Finding the Fourth Proportional to 10,551.92, 15,810.36 and 7,425.39

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Solution

The fourth proportional to 10,551.92, 15,810.36 and 7,425.39 is: 11,125.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,551.92 : 15,810.36 = 7,425.39 : x
  2. Step 2: Convert to fraction form
    10,551.92/15,810.36 = 7,425.39/x
  3. Step 3: Cross multiply
    10,551.92x = 15,810.36 × 7,425.39
  4. Step 4: Simplify right side
    10,551.92x = 117,398,089.04
  5. Step 5: Solve for x
    x = 117,398,089.04/10,551.92
  6. Step 6: Final answer
    x = 11,125.75

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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.