Home / 28,425.59-39,227.63-15,679.34

Finding the Fourth Proportional to 28,425.59, 39,227.63 and 15,679.34

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Solution

The fourth proportional to 28,425.59, 39,227.63 and 15,679.34 is: 21,637.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.59 : 39,227.63 = 15,679.34 : x
  2. Step 2: Convert to fraction form
    28,425.59/39,227.63 = 15,679.34/x
  3. Step 3: Cross multiply
    28,425.59x = 39,227.63 × 15,679.34
  4. Step 4: Simplify right side
    28,425.59x = 615,063,073.63
  5. Step 5: Solve for x
    x = 615,063,073.63/28,425.59
  6. Step 6: Final answer
    x = 21,637.65

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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.