Home / 12,551.15-18,821.25-4,229.61

Finding the Fourth Proportional to 12,551.15, 18,821.25 and 4,229.61

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Solution

The fourth proportional to 12,551.15, 18,821.25 and 4,229.61 is: 6,342.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,551.15 : 18,821.25 = 4,229.61 : x
  2. Step 2: Convert to fraction form
    12,551.15/18,821.25 = 4,229.61/x
  3. Step 3: Cross multiply
    12,551.15x = 18,821.25 × 4,229.61
  4. Step 4: Simplify right side
    12,551.15x = 79,606,547.21
  5. Step 5: Solve for x
    x = 79,606,547.21/12,551.15
  6. Step 6: Final answer
    x = 6,342.57

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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.