Home / 13,110.72-18,077.12-10,711.85

Finding the Fourth Proportional to 13,110.72, 18,077.12 and 10,711.85

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Solution

The fourth proportional to 13,110.72, 18,077.12 and 10,711.85 is: 14,769.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.72 : 18,077.12 = 10,711.85 : x
  2. Step 2: Convert to fraction form
    13,110.72/18,077.12 = 10,711.85/x
  3. Step 3: Cross multiply
    13,110.72x = 18,077.12 × 10,711.85
  4. Step 4: Simplify right side
    13,110.72x = 193,639,397.87
  5. Step 5: Solve for x
    x = 193,639,397.87/13,110.72
  6. Step 6: Final answer
    x = 14,769.55

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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.