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Finding the Fourth Proportional to 18,671.11, 28,068.12 and 17,301.47

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Solution

The fourth proportional to 18,671.11, 28,068.12 and 17,301.47 is: 26,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.11 : 28,068.12 = 17,301.47 : x
  2. Step 2: Convert to fraction form
    18,671.11/28,068.12 = 17,301.47/x
  3. Step 3: Cross multiply
    18,671.11x = 28,068.12 × 17,301.47
  4. Step 4: Simplify right side
    18,671.11x = 485,619,595.80
  5. Step 5: Solve for x
    x = 485,619,595.80/18,671.11
  6. Step 6: Final answer
    x = 26,009.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.