Home / 20,442.49-28,174.76-19,873.87

Finding the Fourth Proportional to 20,442.49, 28,174.76 and 19,873.87

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Solution

The fourth proportional to 20,442.49, 28,174.76 and 19,873.87 is: 27,391.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,442.49 : 28,174.76 = 19,873.87 : x
  2. Step 2: Convert to fraction form
    20,442.49/28,174.76 = 19,873.87/x
  3. Step 3: Cross multiply
    20,442.49x = 28,174.76 × 19,873.87
  4. Step 4: Simplify right side
    20,442.49x = 559,941,517.52
  5. Step 5: Solve for x
    x = 559,941,517.52/20,442.49
  6. Step 6: Final answer
    x = 27,391.06

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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.