Home / 18,307.28-27,470.12-7,221.92

Finding the Fourth Proportional to 18,307.28, 27,470.12 and 7,221.92

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Solution

The fourth proportional to 18,307.28, 27,470.12 and 7,221.92 is: 10,836.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.28 : 27,470.12 = 7,221.92 : x
  2. Step 2: Convert to fraction form
    18,307.28/27,470.12 = 7,221.92/x
  3. Step 3: Cross multiply
    18,307.28x = 27,470.12 × 7,221.92
  4. Step 4: Simplify right side
    18,307.28x = 198,387,009.03
  5. Step 5: Solve for x
    x = 198,387,009.03/18,307.28
  6. Step 6: Final answer
    x = 10,836.51

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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.