Home / 20,675.52-28,531.26-11,722.80

Finding the Fourth Proportional to 20,675.52, 28,531.26 and 11,722.80

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Solution

The fourth proportional to 20,675.52, 28,531.26 and 11,722.80 is: 16,176.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,675.52 : 28,531.26 = 11,722.80 : x
  2. Step 2: Convert to fraction form
    20,675.52/28,531.26 = 11,722.80/x
  3. Step 3: Cross multiply
    20,675.52x = 28,531.26 × 11,722.80
  4. Step 4: Simplify right side
    20,675.52x = 334,466,254.73
  5. Step 5: Solve for x
    x = 334,466,254.73/20,675.52
  6. Step 6: Final answer
    x = 16,176.92

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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.