Home / 12,486.15-18,726.66-3,718.71

Finding the Fourth Proportional to 12,486.15, 18,726.66 and 3,718.71

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Solution

The fourth proportional to 12,486.15, 18,726.66 and 3,718.71 is: 5,577.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.15 : 18,726.66 = 3,718.71 : x
  2. Step 2: Convert to fraction form
    12,486.15/18,726.66 = 3,718.71/x
  3. Step 3: Cross multiply
    12,486.15x = 18,726.66 × 3,718.71
  4. Step 4: Simplify right side
    12,486.15x = 69,639,017.81
  5. Step 5: Solve for x
    x = 69,639,017.81/12,486.15
  6. Step 6: Final answer
    x = 5,577.30

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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.