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Finding the Fourth Proportional to 28,080.50, 38,756.04 and 16,750.70

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Solution

The fourth proportional to 28,080.50, 38,756.04 and 16,750.70 is: 23,118.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.50 : 38,756.04 = 16,750.70 : x
  2. Step 2: Convert to fraction form
    28,080.50/38,756.04 = 16,750.70/x
  3. Step 3: Cross multiply
    28,080.50x = 38,756.04 × 16,750.70
  4. Step 4: Simplify right side
    28,080.50x = 649,190,799.23
  5. Step 5: Solve for x
    x = 649,190,799.23/28,080.50
  6. Step 6: Final answer
    x = 23,118.92

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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.