Home / 18,121.32-24,992.64-13,655.04

Finding the Fourth Proportional to 18,121.32, 24,992.64 and 13,655.04

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Solution

The fourth proportional to 18,121.32, 24,992.64 and 13,655.04 is: 18,832.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.32 : 24,992.64 = 13,655.04 : x
  2. Step 2: Convert to fraction form
    18,121.32/24,992.64 = 13,655.04/x
  3. Step 3: Cross multiply
    18,121.32x = 24,992.64 × 13,655.04
  4. Step 4: Simplify right side
    18,121.32x = 341,275,498.91
  5. Step 5: Solve for x
    x = 341,275,498.91/18,121.32
  6. Step 6: Final answer
    x = 18,832.82

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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.