Home / 15,072.38-20,800.95-8,358.65

Finding the Fourth Proportional to 15,072.38, 20,800.95 and 8,358.65

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Solution

The fourth proportional to 15,072.38, 20,800.95 and 8,358.65 is: 11,535.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.38 : 20,800.95 = 8,358.65 : x
  2. Step 2: Convert to fraction form
    15,072.38/20,800.95 = 8,358.65/x
  3. Step 3: Cross multiply
    15,072.38x = 20,800.95 × 8,358.65
  4. Step 4: Simplify right side
    15,072.38x = 173,867,860.72
  5. Step 5: Solve for x
    x = 173,867,860.72/15,072.38
  6. Step 6: Final answer
    x = 11,535.53

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Double scale
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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.