Home / 11,685.60-17,515.98-5,438.34

Finding the Fourth Proportional to 11,685.60, 17,515.98 and 5,438.34

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Solution

The fourth proportional to 11,685.60, 17,515.98 and 5,438.34 is: 8,151.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,685.60 : 17,515.98 = 5,438.34 : x
  2. Step 2: Convert to fraction form
    11,685.60/17,515.98 = 5,438.34/x
  3. Step 3: Cross multiply
    11,685.60x = 17,515.98 × 5,438.34
  4. Step 4: Simplify right side
    11,685.60x = 95,257,854.67
  5. Step 5: Solve for x
    x = 95,257,854.67/11,685.60
  6. Step 6: Final answer
    x = 8,151.73

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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.