Home / 15,032.30-20,744.16-8,318.21

Finding the Fourth Proportional to 15,032.30, 20,744.16 and 8,318.21

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Solution

The fourth proportional to 15,032.30, 20,744.16 and 8,318.21 is: 11,478.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,032.30 : 20,744.16 = 8,318.21 : x
  2. Step 2: Convert to fraction form
    15,032.30/20,744.16 = 8,318.21/x
  3. Step 3: Cross multiply
    15,032.30x = 20,744.16 × 8,318.21
  4. Step 4: Simplify right side
    15,032.30x = 172,554,279.15
  5. Step 5: Solve for x
    x = 172,554,279.15/15,032.30
  6. Step 6: Final answer
    x = 11,478.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.