Home / 10,339.12-15,508.68-5,148.64

Finding the Fourth Proportional to 10,339.12, 15,508.68 and 5,148.64

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Solution

The fourth proportional to 10,339.12, 15,508.68 and 5,148.64 is: 7,722.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,339.12 : 15,508.68 = 5,148.64 : x
  2. Step 2: Convert to fraction form
    10,339.12/15,508.68 = 5,148.64/x
  3. Step 3: Cross multiply
    10,339.12x = 15,508.68 × 5,148.64
  4. Step 4: Simplify right side
    10,339.12x = 79,848,610.20
  5. Step 5: Solve for x
    x = 79,848,610.20/10,339.12
  6. Step 6: Final answer
    x = 7,722.96

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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.