Home / 28,229.22-38,955.20-16,905.02

Finding the Fourth Proportional to 28,229.22, 38,955.20 and 16,905.02

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Solution

The fourth proportional to 28,229.22, 38,955.20 and 16,905.02 is: 23,328.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,229.22 : 38,955.20 = 16,905.02 : x
  2. Step 2: Convert to fraction form
    28,229.22/38,955.20 = 16,905.02/x
  3. Step 3: Cross multiply
    28,229.22x = 38,955.20 × 16,905.02
  4. Step 4: Simplify right side
    28,229.22x = 658,538,155.80
  5. Step 5: Solve for x
    x = 658,538,155.80/28,229.22
  6. Step 6: Final answer
    x = 23,328.24

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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.