Home / 12,219.58-18,331.17-4,426.57

Finding the Fourth Proportional to 12,219.58, 18,331.17 and 4,426.57

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Solution

The fourth proportional to 12,219.58, 18,331.17 and 4,426.57 is: 6,640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,219.58 : 18,331.17 = 4,426.57 : x
  2. Step 2: Convert to fraction form
    12,219.58/18,331.17 = 4,426.57/x
  3. Step 3: Cross multiply
    12,219.58x = 18,331.17 × 4,426.57
  4. Step 4: Simplify right side
    12,219.58x = 81,144,207.19
  5. Step 5: Solve for x
    x = 81,144,207.19/12,219.58
  6. Step 6: Final answer
    x = 6,640.51

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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.