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Finding the Fourth Proportional to 18,708, 25,817.40 and 10,324.32

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Solution

The fourth proportional to 18,708, 25,817.40 and 10,324.32 is: 14,247.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,708 : 25,817.40 = 10,324.32 : x
  2. Step 2: Convert to fraction form
    18,708/25,817.40 = 10,324.32/x
  3. Step 3: Cross multiply
    18,708x = 25,817.40 × 10,324.32
  4. Step 4: Simplify right side
    18,708x = 266,547,099.17
  5. Step 5: Solve for x
    x = 266,547,099.17/18,708
  6. Step 6: Final answer
    x = 14,247.76

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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.