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Finding the Fourth Proportional to 10,999.92, 16,500.84 and 5,153.40

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Solution

The fourth proportional to 10,999.92, 16,500.84 and 5,153.40 is: 7,730.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.92 : 16,500.84 = 5,153.40 : x
  2. Step 2: Convert to fraction form
    10,999.92/16,500.84 = 5,153.40/x
  3. Step 3: Cross multiply
    10,999.92x = 16,500.84 × 5,153.40
  4. Step 4: Simplify right side
    10,999.92x = 85,035,428.86
  5. Step 5: Solve for x
    x = 85,035,428.86/10,999.92
  6. Step 6: Final answer
    x = 7,730.55

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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.