Home / 39,416.50-54,395.92-21,512.65

Finding the Fourth Proportional to 39,416.50, 54,395.92 and 21,512.65

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Solution

The fourth proportional to 39,416.50, 54,395.92 and 21,512.65 is: 29,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.50 : 54,395.92 = 21,512.65 : x
  2. Step 2: Convert to fraction form
    39,416.50/54,395.92 = 21,512.65/x
  3. Step 3: Cross multiply
    39,416.50x = 54,395.92 × 21,512.65
  4. Step 4: Simplify right side
    39,416.50x = 1,170,200,388.39
  5. Step 5: Solve for x
    x = 1,170,200,388.39/39,416.50
  6. Step 6: Final answer
    x = 29,688.08

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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.