Home / 10,115.39-15,173.06-3,543.45

Finding the Fourth Proportional to 10,115.39, 15,173.06 and 3,543.45

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Solution

The fourth proportional to 10,115.39, 15,173.06 and 3,543.45 is: 5,315.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.39 : 15,173.06 = 3,543.45 : x
  2. Step 2: Convert to fraction form
    10,115.39/15,173.06 = 3,543.45/x
  3. Step 3: Cross multiply
    10,115.39x = 15,173.06 × 3,543.45
  4. Step 4: Simplify right side
    10,115.39x = 53,764,961.74
  5. Step 5: Solve for x
    x = 53,764,961.74/10,115.39
  6. Step 6: Final answer
    x = 5,315.17

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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.