Home / 10,770.80-16,151.40-4,929.20

Finding the Fourth Proportional to 10,770.80, 16,151.40 and 4,929.20

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Solution

The fourth proportional to 10,770.80, 16,151.40 and 4,929.20 is: 7,391.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,770.80 : 16,151.40 = 4,929.20 : x
  2. Step 2: Convert to fraction form
    10,770.80/16,151.40 = 4,929.20/x
  3. Step 3: Cross multiply
    10,770.80x = 16,151.40 × 4,929.20
  4. Step 4: Simplify right side
    10,770.80x = 79,613,480.88
  5. Step 5: Solve for x
    x = 79,613,480.88/10,770.80
  6. Step 6: Final answer
    x = 7,391.60

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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.