Home / 20,632.57-28,473.60-11,679.91

Finding the Fourth Proportional to 20,632.57, 28,473.60 and 11,679.91

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Solution

The fourth proportional to 20,632.57, 28,473.60 and 11,679.91 is: 16,118.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,632.57 : 28,473.60 = 11,679.91 : x
  2. Step 2: Convert to fraction form
    20,632.57/28,473.60 = 11,679.91/x
  3. Step 3: Cross multiply
    20,632.57x = 28,473.60 × 11,679.91
  4. Step 4: Simplify right side
    20,632.57x = 332,569,085.38
  5. Step 5: Solve for x
    x = 332,569,085.38/20,632.57
  6. Step 6: Final answer
    x = 16,118.65

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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.