Home / 18,988.38-26,198.55-12,274.14

Finding the Fourth Proportional to 18,988.38, 26,198.55 and 12,274.14

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Solution

The fourth proportional to 18,988.38, 26,198.55 and 12,274.14 is: 16,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,988.38 : 26,198.55 = 12,274.14 : x
  2. Step 2: Convert to fraction form
    18,988.38/26,198.55 = 12,274.14/x
  3. Step 3: Cross multiply
    18,988.38x = 26,198.55 × 12,274.14
  4. Step 4: Simplify right side
    18,988.38x = 321,564,670.50
  5. Step 5: Solve for x
    x = 321,564,670.50/18,988.38
  6. Step 6: Final answer
    x = 16,934.81

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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.