Home / 28,433.52-39,238.56-15,687.18

Finding the Fourth Proportional to 28,433.52, 39,238.56 and 15,687.18

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Solution

The fourth proportional to 28,433.52, 39,238.56 and 15,687.18 is: 21,648.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.52 : 39,238.56 = 15,687.18 : x
  2. Step 2: Convert to fraction form
    28,433.52/39,238.56 = 15,687.18/x
  3. Step 3: Cross multiply
    28,433.52x = 39,238.56 × 15,687.18
  4. Step 4: Simplify right side
    28,433.52x = 615,542,353.66
  5. Step 5: Solve for x
    x = 615,542,353.66/28,433.52
  6. Step 6: Final answer
    x = 21,648.48

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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.