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Finding the Fourth Proportional to 18,998.40, 26,217.28 and 10,614.40

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Solution

The fourth proportional to 18,998.40, 26,217.28 and 10,614.40 is: 14,647.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,998.40 : 26,217.28 = 10,614.40 : x
  2. Step 2: Convert to fraction form
    18,998.40/26,217.28 = 10,614.40/x
  3. Step 3: Cross multiply
    18,998.40x = 26,217.28 × 10,614.40
  4. Step 4: Simplify right side
    18,998.40x = 278,280,696.83
  5. Step 5: Solve for x
    x = 278,280,696.83/18,998.40
  6. Step 6: Final answer
    x = 14,647.59

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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.