Home / 28,425.83-39,227.60-15,679.82

Finding the Fourth Proportional to 28,425.83, 39,227.60 and 15,679.82

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Solution

The fourth proportional to 28,425.83, 39,227.60 and 15,679.82 is: 21,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.83 : 39,227.60 = 15,679.82 : x
  2. Step 2: Convert to fraction form
    28,425.83/39,227.60 = 15,679.82/x
  3. Step 3: Cross multiply
    28,425.83x = 39,227.60 × 15,679.82
  4. Step 4: Simplify right side
    28,425.83x = 615,081,844.30
  5. Step 5: Solve for x
    x = 615,081,844.30/28,425.83
  6. Step 6: Final answer
    x = 21,638.14

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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.