Home / 18,718.40-25,836.36-10,761.50

Finding the Fourth Proportional to 18,718.40, 25,836.36 and 10,761.50

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Solution

The fourth proportional to 18,718.40, 25,836.36 and 10,761.50 is: 14,853.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718.40 : 25,836.36 = 10,761.50 : x
  2. Step 2: Convert to fraction form
    18,718.40/25,836.36 = 10,761.50/x
  3. Step 3: Cross multiply
    18,718.40x = 25,836.36 × 10,761.50
  4. Step 4: Simplify right side
    18,718.40x = 278,037,988.14
  5. Step 5: Solve for x
    x = 278,037,988.14/18,718.40
  6. Step 6: Final answer
    x = 14,853.73

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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.