Home / 14,456.80-21,659.28-13,679.20

Finding the Fourth Proportional to 14,456.80, 21,659.28 and 13,679.20

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Solution

The fourth proportional to 14,456.80, 21,659.28 and 13,679.20 is: 20,494.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,456.80 : 21,659.28 = 13,679.20 : x
  2. Step 2: Convert to fraction form
    14,456.80/21,659.28 = 13,679.20/x
  3. Step 3: Cross multiply
    14,456.80x = 21,659.28 × 13,679.20
  4. Step 4: Simplify right side
    14,456.80x = 296,281,622.98
  5. Step 5: Solve for x
    x = 296,281,622.98/14,456.80
  6. Step 6: Final answer
    x = 20,494.27

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1.5x scale

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.