Home / 21,311.20-32,000.40-12,552.80

Finding the Fourth Proportional to 21,311.20, 32,000.40 and 12,552.80

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Solution

The fourth proportional to 21,311.20, 32,000.40 and 12,552.80 is: 18,848.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,311.20 : 32,000.40 = 12,552.80 : x
  2. Step 2: Convert to fraction form
    21,311.20/32,000.40 = 12,552.80/x
  3. Step 3: Cross multiply
    21,311.20x = 32,000.40 × 12,552.80
  4. Step 4: Simplify right side
    21,311.20x = 401,694,621.12
  5. Step 5: Solve for x
    x = 401,694,621.12/21,311.20
  6. Step 6: Final answer
    x = 18,848.99

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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.