Home / 20,747.71-28,627.54-12,132.23

Finding the Fourth Proportional to 20,747.71, 28,627.54 and 12,132.23

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Solution

The fourth proportional to 20,747.71, 28,627.54 and 12,132.23 is: 16,739.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.71 : 28,627.54 = 12,132.23 : x
  2. Step 2: Convert to fraction form
    20,747.71/28,627.54 = 12,132.23/x
  3. Step 3: Cross multiply
    20,747.71x = 28,627.54 × 12,132.23
  4. Step 4: Simplify right side
    20,747.71x = 347,315,899.61
  5. Step 5: Solve for x
    x = 347,315,899.61/20,747.71
  6. Step 6: Final answer
    x = 16,739.96

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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.