Home / 18,721.66-25,836.16-10,765.30

Finding the Fourth Proportional to 18,721.66, 25,836.16 and 10,765.30

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Solution

The fourth proportional to 18,721.66, 25,836.16 and 10,765.30 is: 14,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.66 : 25,836.16 = 10,765.30 : x
  2. Step 2: Convert to fraction form
    18,721.66/25,836.16 = 10,765.30/x
  3. Step 3: Cross multiply
    18,721.66x = 25,836.16 × 10,765.30
  4. Step 4: Simplify right side
    18,721.66x = 278,134,013.25
  5. Step 5: Solve for x
    x = 278,134,013.25/18,721.66
  6. Step 6: Final answer
    x = 14,856.27

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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.