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Finding the Fourth Proportional to 18,801.68, 25,980.54 and 17,890.70

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Solution

The fourth proportional to 18,801.68, 25,980.54 and 17,890.70 is: 24,721.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.68 : 25,980.54 = 17,890.70 : x
  2. Step 2: Convert to fraction form
    18,801.68/25,980.54 = 17,890.70/x
  3. Step 3: Cross multiply
    18,801.68x = 25,980.54 × 17,890.70
  4. Step 4: Simplify right side
    18,801.68x = 464,810,046.98
  5. Step 5: Solve for x
    x = 464,810,046.98/18,801.68
  6. Step 6: Final answer
    x = 24,721.73

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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.