Home / 20,768.38-31,152.27-9,668.86

Finding the Fourth Proportional to 20,768.38, 31,152.27 and 9,668.86

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Solution

The fourth proportional to 20,768.38, 31,152.27 and 9,668.86 is: 14,503.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,768.38 : 31,152.27 = 9,668.86 : x
  2. Step 2: Convert to fraction form
    20,768.38/31,152.27 = 9,668.86/x
  3. Step 3: Cross multiply
    20,768.38x = 31,152.27 × 9,668.86
  4. Step 4: Simplify right side
    20,768.38x = 301,206,937.31
  5. Step 5: Solve for x
    x = 301,206,937.31/20,768.38
  6. Step 6: Final answer
    x = 14,503.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.