Home / 39,416.34-54,395.71-21,512.50

Finding the Fourth Proportional to 39,416.34, 54,395.71 and 21,512.50

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Solution

The fourth proportional to 39,416.34, 54,395.71 and 21,512.50 is: 29,687.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,416.34 : 54,395.71 = 21,512.50 : x
  2. Step 2: Convert to fraction form
    39,416.34/54,395.71 = 21,512.50/x
  3. Step 3: Cross multiply
    39,416.34x = 54,395.71 × 21,512.50
  4. Step 4: Simplify right side
    39,416.34x = 1,170,187,521.60
  5. Step 5: Solve for x
    x = 1,170,187,521.60/39,416.34
  6. Step 6: Final answer
    x = 29,687.88

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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.