Home / 22,590.74-31,176.42-12,520.28

Finding the Fourth Proportional to 22,590.74, 31,176.42 and 12,520.28

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Solution

The fourth proportional to 22,590.74, 31,176.42 and 12,520.28 is: 17,278.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,590.74 : 31,176.42 = 12,520.28 : x
  2. Step 2: Convert to fraction form
    22,590.74/31,176.42 = 12,520.28/x
  3. Step 3: Cross multiply
    22,590.74x = 31,176.42 × 12,520.28
  4. Step 4: Simplify right side
    22,590.74x = 390,337,507.80
  5. Step 5: Solve for x
    x = 390,337,507.80/22,590.74
  6. Step 6: Final answer
    x = 17,278.65

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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.