Home / 11,520.24-15,900.60-6,742.44

Finding the Fourth Proportional to 11,520.24, 15,900.60 and 6,742.44

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Solution

The fourth proportional to 11,520.24, 15,900.60 and 6,742.44 is: 9,306.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,520.24 : 15,900.60 = 6,742.44 : x
  2. Step 2: Convert to fraction form
    11,520.24/15,900.60 = 6,742.44/x
  3. Step 3: Cross multiply
    11,520.24x = 15,900.60 × 6,742.44
  4. Step 4: Simplify right side
    11,520.24x = 107,208,841.46
  5. Step 5: Solve for x
    x = 107,208,841.46/11,520.24
  6. Step 6: Final answer
    x = 9,306.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.