Home / 14,215.68-21,319.20-5,449.92

Finding the Fourth Proportional to 14,215.68, 21,319.20 and 5,449.92

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Solution

The fourth proportional to 14,215.68, 21,319.20 and 5,449.92 is: 8,173.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,215.68 : 21,319.20 = 5,449.92 : x
  2. Step 2: Convert to fraction form
    14,215.68/21,319.20 = 5,449.92/x
  3. Step 3: Cross multiply
    14,215.68x = 21,319.20 × 5,449.92
  4. Step 4: Simplify right side
    14,215.68x = 116,187,934.46
  5. Step 5: Solve for x
    x = 116,187,934.46/14,215.68
  6. Step 6: Final answer
    x = 8,173.22

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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.