Home / 22,690.82-31,254.67-15,872.78

Finding the Fourth Proportional to 22,690.82, 31,254.67 and 15,872.78

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Solution

The fourth proportional to 22,690.82, 31,254.67 and 15,872.78 is: 21,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,690.82 : 31,254.67 = 15,872.78 : x
  2. Step 2: Convert to fraction form
    22,690.82/31,254.67 = 15,872.78/x
  3. Step 3: Cross multiply
    22,690.82x = 31,254.67 × 15,872.78
  4. Step 4: Simplify right side
    22,690.82x = 496,098,500.88
  5. Step 5: Solve for x
    x = 496,098,500.88/22,690.82
  6. Step 6: Final answer
    x = 21,863.40

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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.