Home / 13,678.97-20,521.62-4,319.91

Finding the Fourth Proportional to 13,678.97, 20,521.62 and 4,319.91

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Solution

The fourth proportional to 13,678.97, 20,521.62 and 4,319.91 is: 6,480.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.97 : 20,521.62 = 4,319.91 : x
  2. Step 2: Convert to fraction form
    13,678.97/20,521.62 = 4,319.91/x
  3. Step 3: Cross multiply
    13,678.97x = 20,521.62 × 4,319.91
  4. Step 4: Simplify right side
    13,678.97x = 88,651,551.45
  5. Step 5: Solve for x
    x = 88,651,551.45/13,678.97
  6. Step 6: Final answer
    x = 6,480.87

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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.