Home / 12,645.06-18,992.18-10,306.78

Finding the Fourth Proportional to 12,645.06, 18,992.18 and 10,306.78

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Solution

The fourth proportional to 12,645.06, 18,992.18 and 10,306.78 is: 15,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.06 : 18,992.18 = 10,306.78 : x
  2. Step 2: Convert to fraction form
    12,645.06/18,992.18 = 10,306.78/x
  3. Step 3: Cross multiply
    12,645.06x = 18,992.18 × 10,306.78
  4. Step 4: Simplify right side
    12,645.06x = 195,748,220.98
  5. Step 5: Solve for x
    x = 195,748,220.98/12,645.06
  6. Step 6: Final answer
    x = 15,480.21

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1.5x scale

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.