Home / 18,353.07-25,338.49-12,685.70

Finding the Fourth Proportional to 18,353.07, 25,338.49 and 12,685.70

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Solution

The fourth proportional to 18,353.07, 25,338.49 and 12,685.70 is: 17,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.07 : 25,338.49 = 12,685.70 : x
  2. Step 2: Convert to fraction form
    18,353.07/25,338.49 = 12,685.70/x
  3. Step 3: Cross multiply
    18,353.07x = 25,338.49 × 12,685.70
  4. Step 4: Simplify right side
    18,353.07x = 321,436,514.22
  5. Step 5: Solve for x
    x = 321,436,514.22/18,353.07
  6. Step 6: Final answer
    x = 17,514.05

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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.