Home / 21,312.20-32,001.90-12,553.80

Finding the Fourth Proportional to 21,312.20, 32,001.90 and 12,553.80

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Solution

The fourth proportional to 21,312.20, 32,001.90 and 12,553.80 is: 18,850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.20 : 32,001.90 = 12,553.80 : x
  2. Step 2: Convert to fraction form
    21,312.20/32,001.90 = 12,553.80/x
  3. Step 3: Cross multiply
    21,312.20x = 32,001.90 × 12,553.80
  4. Step 4: Simplify right side
    21,312.20x = 401,745,452.22
  5. Step 5: Solve for x
    x = 401,745,452.22/21,312.20
  6. Step 6: Final answer
    x = 18,850.49

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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.