Home / 27,912.84-38,519.10-15,165.69

Finding the Fourth Proportional to 27,912.84, 38,519.10 and 15,165.69

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Solution

The fourth proportional to 27,912.84, 38,519.10 and 15,165.69 is: 20,928.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.84 : 38,519.10 = 15,165.69 : x
  2. Step 2: Convert to fraction form
    27,912.84/38,519.10 = 15,165.69/x
  3. Step 3: Cross multiply
    27,912.84x = 38,519.10 × 15,165.69
  4. Step 4: Simplify right side
    27,912.84x = 584,168,729.68
  5. Step 5: Solve for x
    x = 584,168,729.68/27,912.84
  6. Step 6: Final answer
    x = 20,928.32

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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.