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Finding the Fourth Proportional to 9,000.13, 13,568.72 and 8,365.90

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Solution

The fourth proportional to 9,000.13, 13,568.72 and 8,365.90 is: 12,612.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,000.13 : 13,568.72 = 8,365.90 : x
  2. Step 2: Convert to fraction form
    9,000.13/13,568.72 = 8,365.90/x
  3. Step 3: Cross multiply
    9,000.13x = 13,568.72 × 8,365.90
  4. Step 4: Simplify right side
    9,000.13x = 113,514,554.65
  5. Step 5: Solve for x
    x = 113,514,554.65/9,000.13
  6. Step 6: Final answer
    x = 12,612.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.