Home / 22,138.15-30,549.16-12,580.04

Finding the Fourth Proportional to 22,138.15, 30,549.16 and 12,580.04

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Solution

The fourth proportional to 22,138.15, 30,549.16 and 12,580.04 is: 17,359.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,138.15 : 30,549.16 = 12,580.04 : x
  2. Step 2: Convert to fraction form
    22,138.15/30,549.16 = 12,580.04/x
  3. Step 3: Cross multiply
    22,138.15x = 30,549.16 × 12,580.04
  4. Step 4: Simplify right side
    22,138.15x = 384,309,654.77
  5. Step 5: Solve for x
    x = 384,309,654.77/22,138.15
  6. Step 6: Final answer
    x = 17,359.61

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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.