Home / 12,502.49-18,728.21-8,106.62

Finding the Fourth Proportional to 12,502.49, 18,728.21 and 8,106.62

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Solution

The fourth proportional to 12,502.49, 18,728.21 and 8,106.62 is: 12,143.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,502.49 : 18,728.21 = 8,106.62 : x
  2. Step 2: Convert to fraction form
    12,502.49/18,728.21 = 8,106.62/x
  3. Step 3: Cross multiply
    12,502.49x = 18,728.21 × 8,106.62
  4. Step 4: Simplify right side
    12,502.49x = 151,822,408.38
  5. Step 5: Solve for x
    x = 151,822,408.38/12,502.49
  6. Step 6: Final answer
    x = 12,143.38

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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.