Home / 18,805.30-25,951.26-10,421.80

Finding the Fourth Proportional to 18,805.30, 25,951.26 and 10,421.80

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Solution

The fourth proportional to 18,805.30, 25,951.26 and 10,421.80 is: 14,382.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,805.30 : 25,951.26 = 10,421.80 : x
  2. Step 2: Convert to fraction form
    18,805.30/25,951.26 = 10,421.80/x
  3. Step 3: Cross multiply
    18,805.30x = 25,951.26 × 10,421.80
  4. Step 4: Simplify right side
    18,805.30x = 270,458,841.47
  5. Step 5: Solve for x
    x = 270,458,841.47/18,805.30
  6. Step 6: Final answer
    x = 14,382.05

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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.