Home / 10,742.52-16,115.70-3,345.72

Finding the Fourth Proportional to 10,742.52, 16,115.70 and 3,345.72

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Solution

The fourth proportional to 10,742.52, 16,115.70 and 3,345.72 is: 5,019.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,742.52 : 16,115.70 = 3,345.72 : x
  2. Step 2: Convert to fraction form
    10,742.52/16,115.70 = 3,345.72/x
  3. Step 3: Cross multiply
    10,742.52x = 16,115.70 × 3,345.72
  4. Step 4: Simplify right side
    10,742.52x = 53,918,619.80
  5. Step 5: Solve for x
    x = 53,918,619.80/10,742.52
  6. Step 6: Final answer
    x = 5,019.18

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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.