Home / 28,433.16-39,240.16-15,687.52

Finding the Fourth Proportional to 28,433.16, 39,240.16 and 15,687.52

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Solution

The fourth proportional to 28,433.16, 39,240.16 and 15,687.52 is: 21,650.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,433.16 : 39,240.16 = 15,687.52 : x
  2. Step 2: Convert to fraction form
    28,433.16/39,240.16 = 15,687.52/x
  3. Step 3: Cross multiply
    28,433.16x = 39,240.16 × 15,687.52
  4. Step 4: Simplify right side
    28,433.16x = 615,580,794.80
  5. Step 5: Solve for x
    x = 615,580,794.80/28,433.16
  6. Step 6: Final answer
    x = 21,650.10

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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.