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Finding the Fourth Proportional to 10,885.92, 15,019.02 and 6,347.57

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Solution

The fourth proportional to 10,885.92, 15,019.02 and 6,347.57 is: 8,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,885.92 : 15,019.02 = 6,347.57 : x
  2. Step 2: Convert to fraction form
    10,885.92/15,019.02 = 6,347.57/x
  3. Step 3: Cross multiply
    10,885.92x = 15,019.02 × 6,347.57
  4. Step 4: Simplify right side
    10,885.92x = 95,334,280.64
  5. Step 5: Solve for x
    x = 95,334,280.64/10,885.92
  6. Step 6: Final answer
    x = 8,757.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.