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Finding the Fourth Proportional to 9,999.30, 14,966.55 and 8,832.90

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Solution

The fourth proportional to 9,999.30, 14,966.55 and 8,832.90 is: 13,220.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,999.30 : 14,966.55 = 8,832.90 : x
  2. Step 2: Convert to fraction form
    9,999.30/14,966.55 = 8,832.90/x
  3. Step 3: Cross multiply
    9,999.30x = 14,966.55 × 8,832.90
  4. Step 4: Simplify right side
    9,999.30x = 132,198,039.50
  5. Step 5: Solve for x
    x = 132,198,039.50/9,999.30
  6. Step 6: Final answer
    x = 13,220.73

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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.