Home / 21,421.68-32,115.16-8,951.24

Finding the Fourth Proportional to 21,421.68, 32,115.16 and 8,951.24

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Solution

The fourth proportional to 21,421.68, 32,115.16 and 8,951.24 is: 13,419.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,421.68 : 32,115.16 = 8,951.24 : x
  2. Step 2: Convert to fraction form
    21,421.68/32,115.16 = 8,951.24/x
  3. Step 3: Cross multiply
    21,421.68x = 32,115.16 × 8,951.24
  4. Step 4: Simplify right side
    21,421.68x = 287,470,504.80
  5. Step 5: Solve for x
    x = 287,470,504.80/21,421.68
  6. Step 6: Final answer
    x = 13,419.61

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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.