Home / 10,115.42-15,172.65-3,543.08

Finding the Fourth Proportional to 10,115.42, 15,172.65 and 3,543.08

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Solution

The fourth proportional to 10,115.42, 15,172.65 and 3,543.08 is: 5,314.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.42 : 15,172.65 = 3,543.08 : x
  2. Step 2: Convert to fraction form
    10,115.42/15,172.65 = 3,543.08/x
  3. Step 3: Cross multiply
    10,115.42x = 15,172.65 × 3,543.08
  4. Step 4: Simplify right side
    10,115.42x = 53,757,836.90
  5. Step 5: Solve for x
    x = 53,757,836.90/10,115.42
  6. Step 6: Final answer
    x = 5,314.45

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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.