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Finding the Fourth Proportional to 28,080.80, 38,751.48 and 16,146.46

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Solution

The fourth proportional to 28,080.80, 38,751.48 and 16,146.46 is: 22,282.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.80 : 38,751.48 = 16,146.46 : x
  2. Step 2: Convert to fraction form
    28,080.80/38,751.48 = 16,146.46/x
  3. Step 3: Cross multiply
    28,080.80x = 38,751.48 × 16,146.46
  4. Step 4: Simplify right side
    28,080.80x = 625,699,221.76
  5. Step 5: Solve for x
    x = 625,699,221.76/28,080.80
  6. Step 6: Final answer
    x = 22,282.10

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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.