Home / 18,320.72-27,459.12-9,440.28

Finding the Fourth Proportional to 18,320.72, 27,459.12 and 9,440.28

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Solution

The fourth proportional to 18,320.72, 27,459.12 and 9,440.28 is: 14,149.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,320.72 : 27,459.12 = 9,440.28 : x
  2. Step 2: Convert to fraction form
    18,320.72/27,459.12 = 9,440.28/x
  3. Step 3: Cross multiply
    18,320.72x = 27,459.12 × 9,440.28
  4. Step 4: Simplify right side
    18,320.72x = 259,221,781.35
  5. Step 5: Solve for x
    x = 259,221,781.35/18,320.72
  6. Step 6: Final answer
    x = 14,149.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.