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Finding the Fourth Proportional to 10,999.85, 16,500.86 and 3,602.55

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Solution

The fourth proportional to 10,999.85, 16,500.86 and 3,602.55 is: 5,404.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.85 : 16,500.86 = 3,602.55 : x
  2. Step 2: Convert to fraction form
    10,999.85/16,500.86 = 3,602.55/x
  3. Step 3: Cross multiply
    10,999.85x = 16,500.86 × 3,602.55
  4. Step 4: Simplify right side
    10,999.85x = 59,445,155.18
  5. Step 5: Solve for x
    x = 59,445,155.18/10,999.85
  6. Step 6: Final answer
    x = 5,404.18

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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.