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Finding the Fourth Proportional to 18,671.17, 25,770 and 10,718.86

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Solution

The fourth proportional to 18,671.17, 25,770 and 10,718.86 is: 14,794.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,671.17 : 25,770 = 10,718.86 : x
  2. Step 2: Convert to fraction form
    18,671.17/25,770 = 10,718.86/x
  3. Step 3: Cross multiply
    18,671.17x = 25,770 × 10,718.86
  4. Step 4: Simplify right side
    18,671.17x = 276,225,022.20
  5. Step 5: Solve for x
    x = 276,225,022.20/18,671.17
  6. Step 6: Final answer
    x = 14,794.20

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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.