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Finding the Fourth Proportional to 14,043.92, 21,065.88 and 3,655.68

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Solution

The fourth proportional to 14,043.92, 21,065.88 and 3,655.68 is: 5,483.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.92 : 21,065.88 = 3,655.68 : x
  2. Step 2: Convert to fraction form
    14,043.92/21,065.88 = 3,655.68/x
  3. Step 3: Cross multiply
    14,043.92x = 21,065.88 × 3,655.68
  4. Step 4: Simplify right side
    14,043.92x = 77,010,116.20
  5. Step 5: Solve for x
    x = 77,010,116.20/14,043.92
  6. Step 6: Final answer
    x = 5,483.52

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Similar ratio
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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.