Home / 18,348.12-25,330.89-12,078.72

Finding the Fourth Proportional to 18,348.12, 25,330.89 and 12,078.72

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Solution

The fourth proportional to 18,348.12, 25,330.89 and 12,078.72 is: 16,675.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.12 : 25,330.89 = 12,078.72 : x
  2. Step 2: Convert to fraction form
    18,348.12/25,330.89 = 12,078.72/x
  3. Step 3: Cross multiply
    18,348.12x = 25,330.89 × 12,078.72
  4. Step 4: Simplify right side
    18,348.12x = 305,964,727.66
  5. Step 5: Solve for x
    x = 305,964,727.66/18,348.12
  6. Step 6: Final answer
    x = 16,675.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.