Home / 22,370.16-30,871.68-12,811.56

Finding the Fourth Proportional to 22,370.16, 30,871.68 and 12,811.56

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Solution

The fourth proportional to 22,370.16, 30,871.68 and 12,811.56 is: 17,680.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,370.16 : 30,871.68 = 12,811.56 : x
  2. Step 2: Convert to fraction form
    22,370.16/30,871.68 = 12,811.56/x
  3. Step 3: Cross multiply
    22,370.16x = 30,871.68 × 12,811.56
  4. Step 4: Simplify right side
    22,370.16x = 395,514,380.62
  5. Step 5: Solve for x
    x = 395,514,380.62/22,370.16
  6. Step 6: Final answer
    x = 17,680.44

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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.