Home / 15,540-23,313.69-5,151.75

Finding the Fourth Proportional to 15,540, 23,313.69 and 5,151.75

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Solution

The fourth proportional to 15,540, 23,313.69 and 5,151.75 is: 7,728.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,540 : 23,313.69 = 5,151.75 : x
  2. Step 2: Convert to fraction form
    15,540/23,313.69 = 5,151.75/x
  3. Step 3: Cross multiply
    15,540x = 23,313.69 × 5,151.75
  4. Step 4: Simplify right side
    15,540x = 120,106,302.46
  5. Step 5: Solve for x
    x = 120,106,302.46/15,540
  6. Step 6: Final answer
    x = 7,728.85

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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.