Home / 21,911.60-32,869.22-7,120.19

Finding the Fourth Proportional to 21,911.60, 32,869.22 and 7,120.19

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Solution

The fourth proportional to 21,911.60, 32,869.22 and 7,120.19 is: 10,680.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,911.60 : 32,869.22 = 7,120.19 : x
  2. Step 2: Convert to fraction form
    21,911.60/32,869.22 = 7,120.19/x
  3. Step 3: Cross multiply
    21,911.60x = 32,869.22 × 7,120.19
  4. Step 4: Simplify right side
    21,911.60x = 234,034,891.60
  5. Step 5: Solve for x
    x = 234,034,891.60/21,911.60
  6. Step 6: Final answer
    x = 10,680.87

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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.