Home / 28,167.22-38,872.74-15,592.78

Finding the Fourth Proportional to 28,167.22, 38,872.74 and 15,592.78

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Solution

The fourth proportional to 28,167.22, 38,872.74 and 15,592.78 is: 21,519.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,167.22 : 38,872.74 = 15,592.78 : x
  2. Step 2: Convert to fraction form
    28,167.22/38,872.74 = 15,592.78/x
  3. Step 3: Cross multiply
    28,167.22x = 38,872.74 × 15,592.78
  4. Step 4: Simplify right side
    28,167.22x = 606,134,082.82
  5. Step 5: Solve for x
    x = 606,134,082.82/28,167.22
  6. Step 6: Final answer
    x = 21,519.13

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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.