Home / 28,569.70-42,882.19-13,789.02

Finding the Fourth Proportional to 28,569.70, 42,882.19 and 13,789.02

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Solution

The fourth proportional to 28,569.70, 42,882.19 and 13,789.02 is: 20,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,569.70 : 42,882.19 = 13,789.02 : x
  2. Step 2: Convert to fraction form
    28,569.70/42,882.19 = 13,789.02/x
  3. Step 3: Cross multiply
    28,569.70x = 42,882.19 × 13,789.02
  4. Step 4: Simplify right side
    28,569.70x = 591,303,360.95
  5. Step 5: Solve for x
    x = 591,303,360.95/28,569.70
  6. Step 6: Final answer
    x = 20,696.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.