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Finding the Fourth Proportional to 10,999.90, 16,480.65 and 9,463.90

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Solution

The fourth proportional to 10,999.90, 16,480.65 and 9,463.90 is: 14,179.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,999.90 : 16,480.65 = 9,463.90 : x
  2. Step 2: Convert to fraction form
    10,999.90/16,480.65 = 9,463.90/x
  3. Step 3: Cross multiply
    10,999.90x = 16,480.65 × 9,463.90
  4. Step 4: Simplify right side
    10,999.90x = 155,971,223.54
  5. Step 5: Solve for x
    x = 155,971,223.54/10,999.90
  6. Step 6: Final answer
    x = 14,179.33

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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.