Home / 11,180.11-15,412.30-7,812.47

Finding the Fourth Proportional to 11,180.11, 15,412.30 and 7,812.47

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Solution

The fourth proportional to 11,180.11, 15,412.30 and 7,812.47 is: 10,769.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,180.11 : 15,412.30 = 7,812.47 : x
  2. Step 2: Convert to fraction form
    11,180.11/15,412.30 = 7,812.47/x
  3. Step 3: Cross multiply
    11,180.11x = 15,412.30 × 7,812.47
  4. Step 4: Simplify right side
    11,180.11x = 120,408,165.43
  5. Step 5: Solve for x
    x = 120,408,165.43/11,180.11
  6. Step 6: Final answer
    x = 10,769.85

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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.