Home / 15,748.50-21,732.91-8,674.87

Finding the Fourth Proportional to 15,748.50, 21,732.91 and 8,674.87

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Solution

The fourth proportional to 15,748.50, 21,732.91 and 8,674.87 is: 11,971.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.50 : 21,732.91 = 8,674.87 : x
  2. Step 2: Convert to fraction form
    15,748.50/21,732.91 = 8,674.87/x
  3. Step 3: Cross multiply
    15,748.50x = 21,732.91 × 8,674.87
  4. Step 4: Simplify right side
    15,748.50x = 188,530,168.97
  5. Step 5: Solve for x
    x = 188,530,168.97/15,748.50
  6. Step 6: Final answer
    x = 11,971.31

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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.