Home / 27,687.87-38,209.68-15,751.29

Finding the Fourth Proportional to 27,687.87, 38,209.68 and 15,751.29

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Solution

The fourth proportional to 27,687.87, 38,209.68 and 15,751.29 is: 21,737.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.87 : 38,209.68 = 15,751.29 : x
  2. Step 2: Convert to fraction form
    27,687.87/38,209.68 = 15,751.29/x
  3. Step 3: Cross multiply
    27,687.87x = 38,209.68 × 15,751.29
  4. Step 4: Simplify right side
    27,687.87x = 601,851,750.49
  5. Step 5: Solve for x
    x = 601,851,750.49/27,687.87
  6. Step 6: Final answer
    x = 21,737.02

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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.