Home / 28,500.31-39,335.86-18,792.70

Finding the Fourth Proportional to 28,500.31, 39,335.86 and 18,792.70

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Solution

The fourth proportional to 28,500.31, 39,335.86 and 18,792.70 is: 25,937.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,500.31 : 39,335.86 = 18,792.70 : x
  2. Step 2: Convert to fraction form
    28,500.31/39,335.86 = 18,792.70/x
  3. Step 3: Cross multiply
    28,500.31x = 39,335.86 × 18,792.70
  4. Step 4: Simplify right side
    28,500.31x = 739,226,870.90
  5. Step 5: Solve for x
    x = 739,226,870.90/28,500.31
  6. Step 6: Final answer
    x = 25,937.51

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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.