Home / 28,690.13-39,591.50-15,943.25

Finding the Fourth Proportional to 28,690.13, 39,591.50 and 15,943.25

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Solution

The fourth proportional to 28,690.13, 39,591.50 and 15,943.25 is: 22,001.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.13 : 39,591.50 = 15,943.25 : x
  2. Step 2: Convert to fraction form
    28,690.13/39,591.50 = 15,943.25/x
  3. Step 3: Cross multiply
    28,690.13x = 39,591.50 × 15,943.25
  4. Step 4: Simplify right side
    28,690.13x = 631,216,904.70
  5. Step 5: Solve for x
    x = 631,216,904.70/28,690.13
  6. Step 6: Final answer
    x = 22,001.19

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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.