Home / 18,212.38-25,108.85-13,655.68

Finding the Fourth Proportional to 18,212.38, 25,108.85 and 13,655.68

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Solution

The fourth proportional to 18,212.38, 25,108.85 and 13,655.68 is: 18,826.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,212.38 : 25,108.85 = 13,655.68 : x
  2. Step 2: Convert to fraction form
    18,212.38/25,108.85 = 13,655.68/x
  3. Step 3: Cross multiply
    18,212.38x = 25,108.85 × 13,655.68
  4. Step 4: Simplify right side
    18,212.38x = 342,878,392.14
  5. Step 5: Solve for x
    x = 342,878,392.14/18,212.38
  6. Step 6: Final answer
    x = 18,826.66

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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.