Home / 20,498.85-28,289.79-15,454.17

Finding the Fourth Proportional to 20,498.85, 28,289.79 and 15,454.17

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Solution

The fourth proportional to 20,498.85, 28,289.79 and 15,454.17 is: 21,327.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.85 : 28,289.79 = 15,454.17 : x
  2. Step 2: Convert to fraction form
    20,498.85/28,289.79 = 15,454.17/x
  3. Step 3: Cross multiply
    20,498.85x = 28,289.79 × 15,454.17
  4. Step 4: Simplify right side
    20,498.85x = 437,195,223.92
  5. Step 5: Solve for x
    x = 437,195,223.92/20,498.85
  6. Step 6: Final answer
    x = 21,327.79

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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.