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Finding the Fourth Proportional to 10,621.92, 14,657.10 and 6,147.12

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Solution

The fourth proportional to 10,621.92, 14,657.10 and 6,147.12 is: 8,482.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,621.92 : 14,657.10 = 6,147.12 : x
  2. Step 2: Convert to fraction form
    10,621.92/14,657.10 = 6,147.12/x
  3. Step 3: Cross multiply
    10,621.92x = 14,657.10 × 6,147.12
  4. Step 4: Simplify right side
    10,621.92x = 90,098,952.55
  5. Step 5: Solve for x
    x = 90,098,952.55/10,621.92
  6. Step 6: Final answer
    x = 8,482.36

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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.