Home / 20,278.52-28,003.68-19,174.16

Finding the Fourth Proportional to 20,278.52, 28,003.68 and 19,174.16

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Solution

The fourth proportional to 20,278.52, 28,003.68 and 19,174.16 is: 26,478.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,278.52 : 28,003.68 = 19,174.16 : x
  2. Step 2: Convert to fraction form
    20,278.52/28,003.68 = 19,174.16/x
  3. Step 3: Cross multiply
    20,278.52x = 28,003.68 × 19,174.16
  4. Step 4: Simplify right side
    20,278.52x = 536,947,040.91
  5. Step 5: Solve for x
    x = 536,947,040.91/20,278.52
  6. Step 6: Final answer
    x = 26,478.61

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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.