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Finding the Fourth Proportional to 28,080.76, 38,750.46 and 16,900.60

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Solution

The fourth proportional to 28,080.76, 38,750.46 and 16,900.60 is: 23,322.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.76 : 38,750.46 = 16,900.60 : x
  2. Step 2: Convert to fraction form
    28,080.76/38,750.46 = 16,900.60/x
  3. Step 3: Cross multiply
    28,080.76x = 38,750.46 × 16,900.60
  4. Step 4: Simplify right side
    28,080.76x = 654,906,024.28
  5. Step 5: Solve for x
    x = 654,906,024.28/28,080.76
  6. Step 6: Final answer
    x = 23,322.23

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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.