Home / 18,456.86-25,478.96-11,751.68

Finding the Fourth Proportional to 18,456.86, 25,478.96 and 11,751.68

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Solution

The fourth proportional to 18,456.86, 25,478.96 and 11,751.68 is: 16,222.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.86 : 25,478.96 = 11,751.68 : x
  2. Step 2: Convert to fraction form
    18,456.86/25,478.96 = 11,751.68/x
  3. Step 3: Cross multiply
    18,456.86x = 25,478.96 × 11,751.68
  4. Step 4: Simplify right side
    18,456.86x = 299,420,589.59
  5. Step 5: Solve for x
    x = 299,420,589.59/18,456.86
  6. Step 6: Final answer
    x = 16,222.72

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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.