Home / 39,514.16-54,529.50-21,609.15

Finding the Fourth Proportional to 39,514.16, 54,529.50 and 21,609.15

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Solution

The fourth proportional to 39,514.16, 54,529.50 and 21,609.15 is: 29,820.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,514.16 : 54,529.50 = 21,609.15 : x
  2. Step 2: Convert to fraction form
    39,514.16/54,529.50 = 21,609.15/x
  3. Step 3: Cross multiply
    39,514.16x = 54,529.50 × 21,609.15
  4. Step 4: Simplify right side
    39,514.16x = 1,178,336,144.93
  5. Step 5: Solve for x
    x = 1,178,336,144.93/39,514.16
  6. Step 6: Final answer
    x = 29,820.61

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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.