Home / 18,691.74-28,040.40-5,542.56

Finding the Fourth Proportional to 18,691.74, 28,040.40 and 5,542.56

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Solution

The fourth proportional to 18,691.74, 28,040.40 and 5,542.56 is: 8,314.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.74 : 28,040.40 = 5,542.56 : x
  2. Step 2: Convert to fraction form
    18,691.74/28,040.40 = 5,542.56/x
  3. Step 3: Cross multiply
    18,691.74x = 28,040.40 × 5,542.56
  4. Step 4: Simplify right side
    18,691.74x = 155,415,599.42
  5. Step 5: Solve for x
    x = 155,415,599.42/18,691.74
  6. Step 6: Final answer
    x = 8,314.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.