Home / 10,942.40-16,381.20-7,248.80

Finding the Fourth Proportional to 10,942.40, 16,381.20 and 7,248.80

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Solution

The fourth proportional to 10,942.40, 16,381.20 and 7,248.80 is: 10,851.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,942.40 : 16,381.20 = 7,248.80 : x
  2. Step 2: Convert to fraction form
    10,942.40/16,381.20 = 7,248.80/x
  3. Step 3: Cross multiply
    10,942.40x = 16,381.20 × 7,248.80
  4. Step 4: Simplify right side
    10,942.40x = 118,744,042.56
  5. Step 5: Solve for x
    x = 118,744,042.56/10,942.40
  6. Step 6: Final answer
    x = 10,851.74

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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.