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Finding the Fourth Proportional to 22,908.86, 34,378.86 and 12,382.11

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Solution

The fourth proportional to 22,908.86, 34,378.86 and 12,382.11 is: 18,581.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,908.86 : 34,378.86 = 12,382.11 : x
  2. Step 2: Convert to fraction form
    22,908.86/34,378.86 = 12,382.11/x
  3. Step 3: Cross multiply
    22,908.86x = 34,378.86 × 12,382.11
  4. Step 4: Simplify right side
    22,908.86x = 425,682,671.46
  5. Step 5: Solve for x
    x = 425,682,671.46/22,908.86
  6. Step 6: Final answer
    x = 18,581.57

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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.