Home / 18,375.81-25,358.87-13,768.43

Finding the Fourth Proportional to 18,375.81, 25,358.87 and 13,768.43

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Solution

The fourth proportional to 18,375.81, 25,358.87 and 13,768.43 is: 19,000.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,375.81 : 25,358.87 = 13,768.43 : x
  2. Step 2: Convert to fraction form
    18,375.81/25,358.87 = 13,768.43/x
  3. Step 3: Cross multiply
    18,375.81x = 25,358.87 × 13,768.43
  4. Step 4: Simplify right side
    18,375.81x = 349,151,876.74
  5. Step 5: Solve for x
    x = 349,151,876.74/18,375.81
  6. Step 6: Final answer
    x = 19,000.62

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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.