Home / 28,284.31-39,032.58-17,680.20

Finding the Fourth Proportional to 28,284.31, 39,032.58 and 17,680.20

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Solution

The fourth proportional to 28,284.31, 39,032.58 and 17,680.20 is: 24,398.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,284.31 : 39,032.58 = 17,680.20 : x
  2. Step 2: Convert to fraction form
    28,284.31/39,032.58 = 17,680.20/x
  3. Step 3: Cross multiply
    28,284.31x = 39,032.58 × 17,680.20
  4. Step 4: Simplify right side
    28,284.31x = 690,103,820.92
  5. Step 5: Solve for x
    x = 690,103,820.92/28,284.31
  6. Step 6: Final answer
    x = 24,398.82

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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.