Home / 27,728.71-38,267.18-18,290.59

Finding the Fourth Proportional to 27,728.71, 38,267.18 and 18,290.59

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Solution

The fourth proportional to 27,728.71, 38,267.18 and 18,290.59 is: 25,242.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,728.71 : 38,267.18 = 18,290.59 : x
  2. Step 2: Convert to fraction form
    27,728.71/38,267.18 = 18,290.59/x
  3. Step 3: Cross multiply
    27,728.71x = 38,267.18 × 18,290.59
  4. Step 4: Simplify right side
    27,728.71x = 699,929,299.84
  5. Step 5: Solve for x
    x = 699,929,299.84/27,728.71
  6. Step 6: Final answer
    x = 25,242.04

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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.