Home / 21,639.52-32,459.48-8,493.20

Finding the Fourth Proportional to 21,639.52, 32,459.48 and 8,493.20

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Solution

The fourth proportional to 21,639.52, 32,459.48 and 8,493.20 is: 12,739.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,639.52 : 32,459.48 = 8,493.20 : x
  2. Step 2: Convert to fraction form
    21,639.52/32,459.48 = 8,493.20/x
  3. Step 3: Cross multiply
    21,639.52x = 32,459.48 × 8,493.20
  4. Step 4: Simplify right side
    21,639.52x = 275,684,855.54
  5. Step 5: Solve for x
    x = 275,684,855.54/21,639.52
  6. Step 6: Final answer
    x = 12,739.88

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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.