Home / 20,749.62-28,633.46-12,696.66

Finding the Fourth Proportional to 20,749.62, 28,633.46 and 12,696.66

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Solution

The fourth proportional to 20,749.62, 28,633.46 and 12,696.66 is: 17,520.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,749.62 : 28,633.46 = 12,696.66 : x
  2. Step 2: Convert to fraction form
    20,749.62/28,633.46 = 12,696.66/x
  3. Step 3: Cross multiply
    20,749.62x = 28,633.46 × 12,696.66
  4. Step 4: Simplify right side
    20,749.62x = 363,549,306.24
  5. Step 5: Solve for x
    x = 363,549,306.24/20,749.62
  6. Step 6: Final answer
    x = 17,520.77

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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.