Home / 15,748.15-21,731.91-8,674.57

Finding the Fourth Proportional to 15,748.15, 21,731.91 and 8,674.57

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Solution

The fourth proportional to 15,748.15, 21,731.91 and 8,674.57 is: 11,970.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,748.15 : 21,731.91 = 8,674.57 : x
  2. Step 2: Convert to fraction form
    15,748.15/21,731.91 = 8,674.57/x
  3. Step 3: Cross multiply
    15,748.15x = 21,731.91 × 8,674.57
  4. Step 4: Simplify right side
    15,748.15x = 188,514,974.53
  5. Step 5: Solve for x
    x = 188,514,974.53/15,748.15
  6. Step 6: Final answer
    x = 11,970.61

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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.