Home / 28,321.19-39,084.24-15,574.90

Finding the Fourth Proportional to 28,321.19, 39,084.24 and 15,574.90

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Solution

The fourth proportional to 28,321.19, 39,084.24 and 15,574.90 is: 21,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,321.19 : 39,084.24 = 15,574.90 : x
  2. Step 2: Convert to fraction form
    28,321.19/39,084.24 = 15,574.90/x
  3. Step 3: Cross multiply
    28,321.19x = 39,084.24 × 15,574.90
  4. Step 4: Simplify right side
    28,321.19x = 608,732,856.28
  5. Step 5: Solve for x
    x = 608,732,856.28/28,321.19
  6. Step 6: Final answer
    x = 21,493.90

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Half scale
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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.