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Finding the Fourth Proportional to 18,122.12, 25,017.87 and 14,079.87

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Solution

The fourth proportional to 18,122.12, 25,017.87 and 14,079.87 is: 19,437.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.12 : 25,017.87 = 14,079.87 : x
  2. Step 2: Convert to fraction form
    18,122.12/25,017.87 = 14,079.87/x
  3. Step 3: Cross multiply
    18,122.12x = 25,017.87 × 14,079.87
  4. Step 4: Simplify right side
    18,122.12x = 352,248,357.28
  5. Step 5: Solve for x
    x = 352,248,357.28/18,122.12
  6. Step 6: Final answer
    x = 19,437.49

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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.