Home / 21,478.16-32,229.80-8,997.12

Finding the Fourth Proportional to 21,478.16, 32,229.80 and 8,997.12

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Solution

The fourth proportional to 21,478.16, 32,229.80 and 8,997.12 is: 13,500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,478.16 : 32,229.80 = 8,997.12 : x
  2. Step 2: Convert to fraction form
    21,478.16/32,229.80 = 8,997.12/x
  3. Step 3: Cross multiply
    21,478.16x = 32,229.80 × 8,997.12
  4. Step 4: Simplify right side
    21,478.16x = 289,975,333.19
  5. Step 5: Solve for x
    x = 289,975,333.19/21,478.16
  6. Step 6: Final answer
    x = 13,500.94

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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.