Home / 13,490.24-18,616.20-7,521.90

Finding the Fourth Proportional to 13,490.24, 18,616.20 and 7,521.90

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Solution

The fourth proportional to 13,490.24, 18,616.20 and 7,521.90 is: 10,380.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.24 : 18,616.20 = 7,521.90 : x
  2. Step 2: Convert to fraction form
    13,490.24/18,616.20 = 7,521.90/x
  3. Step 3: Cross multiply
    13,490.24x = 18,616.20 × 7,521.90
  4. Step 4: Simplify right side
    13,490.24x = 140,029,194.78
  5. Step 5: Solve for x
    x = 140,029,194.78/13,490.24
  6. Step 6: Final answer
    x = 10,380.04

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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.