Home / 13,540.08-18,684.92-7,572.30

Finding the Fourth Proportional to 13,540.08, 18,684.92 and 7,572.30

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Solution

The fourth proportional to 13,540.08, 18,684.92 and 7,572.30 is: 10,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,540.08 : 18,684.92 = 7,572.30 : x
  2. Step 2: Convert to fraction form
    13,540.08/18,684.92 = 7,572.30/x
  3. Step 3: Cross multiply
    13,540.08x = 18,684.92 × 7,572.30
  4. Step 4: Simplify right side
    13,540.08x = 141,487,781.85
  5. Step 5: Solve for x
    x = 141,487,781.85/13,540.08
  6. Step 6: Final answer
    x = 10,449.55

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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.