Home / 18,721.62-25,835.82-10,765.40

Finding the Fourth Proportional to 18,721.62, 25,835.82 and 10,765.40

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Solution

The fourth proportional to 18,721.62, 25,835.82 and 10,765.40 is: 14,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,721.62 : 25,835.82 = 10,765.40 : x
  2. Step 2: Convert to fraction form
    18,721.62/25,835.82 = 10,765.40/x
  3. Step 3: Cross multiply
    18,721.62x = 25,835.82 × 10,765.40
  4. Step 4: Simplify right side
    18,721.62x = 278,132,936.63
  5. Step 5: Solve for x
    x = 278,132,936.63/18,721.62
  6. Step 6: Final answer
    x = 14,856.24

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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.