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Finding the Fourth Proportional to 18,156.80, 25,059.30 and 16,970.96

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Solution

The fourth proportional to 18,156.80, 25,059.30 and 16,970.96 is: 23,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,156.80 : 25,059.30 = 16,970.96 : x
  2. Step 2: Convert to fraction form
    18,156.80/25,059.30 = 16,970.96/x
  3. Step 3: Cross multiply
    18,156.80x = 25,059.30 × 16,970.96
  4. Step 4: Simplify right side
    18,156.80x = 425,280,377.93
  5. Step 5: Solve for x
    x = 425,280,377.93/18,156.80
  6. Step 6: Final answer
    x = 23,422.65

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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.