Home / 12,078.51-18,117.76-5,506.57

Finding the Fourth Proportional to 12,078.51, 18,117.76 and 5,506.57

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Solution

The fourth proportional to 12,078.51, 18,117.76 and 5,506.57 is: 8,259.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.51 : 18,117.76 = 5,506.57 : x
  2. Step 2: Convert to fraction form
    12,078.51/18,117.76 = 5,506.57/x
  3. Step 3: Cross multiply
    12,078.51x = 18,117.76 × 5,506.57
  4. Step 4: Simplify right side
    12,078.51x = 99,766,713.68
  5. Step 5: Solve for x
    x = 99,766,713.68/12,078.51
  6. Step 6: Final answer
    x = 8,259.85

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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.