Home / 12,125.53-18,081.21-10,650.79

Finding the Fourth Proportional to 12,125.53, 18,081.21 and 10,650.79

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Solution

The fourth proportional to 12,125.53, 18,081.21 and 10,650.79 is: 15,882.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.53 : 18,081.21 = 10,650.79 : x
  2. Step 2: Convert to fraction form
    12,125.53/18,081.21 = 10,650.79/x
  3. Step 3: Cross multiply
    12,125.53x = 18,081.21 × 10,650.79
  4. Step 4: Simplify right side
    12,125.53x = 192,579,027.00
  5. Step 5: Solve for x
    x = 192,579,027.00/12,125.53
  6. Step 6: Final answer
    x = 15,882.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.