Home / 18,298.54-25,226.13-12,991.42

Finding the Fourth Proportional to 18,298.54, 25,226.13 and 12,991.42

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Solution

The fourth proportional to 18,298.54, 25,226.13 and 12,991.42 is: 17,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.54 : 25,226.13 = 12,991.42 : x
  2. Step 2: Convert to fraction form
    18,298.54/25,226.13 = 12,991.42/x
  3. Step 3: Cross multiply
    18,298.54x = 25,226.13 × 12,991.42
  4. Step 4: Simplify right side
    18,298.54x = 327,723,249.80
  5. Step 5: Solve for x
    x = 327,723,249.80/18,298.54
  6. Step 6: Final answer
    x = 17,909.80

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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.