Home / 28,519.03-42,778.55-7,742.53

Finding the Fourth Proportional to 28,519.03, 42,778.55 and 7,742.53

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Solution

The fourth proportional to 28,519.03, 42,778.55 and 7,742.53 is: 11,613.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,519.03 : 42,778.55 = 7,742.53 : x
  2. Step 2: Convert to fraction form
    28,519.03/42,778.55 = 7,742.53/x
  3. Step 3: Cross multiply
    28,519.03x = 42,778.55 × 7,742.53
  4. Step 4: Simplify right side
    28,519.03x = 331,214,279.56
  5. Step 5: Solve for x
    x = 331,214,279.56/28,519.03
  6. Step 6: Final answer
    x = 11,613.80

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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.