Home / 18,269.91-25,212.60-10,720.71

Finding the Fourth Proportional to 18,269.91, 25,212.60 and 10,720.71

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Solution

The fourth proportional to 18,269.91, 25,212.60 and 10,720.71 is: 14,794.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,269.91 : 25,212.60 = 10,720.71 : x
  2. Step 2: Convert to fraction form
    18,269.91/25,212.60 = 10,720.71/x
  3. Step 3: Cross multiply
    18,269.91x = 25,212.60 × 10,720.71
  4. Step 4: Simplify right side
    18,269.91x = 270,296,972.95
  5. Step 5: Solve for x
    x = 270,296,972.95/18,269.91
  6. Step 6: Final answer
    x = 14,794.65

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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.