Home / 39,328.25-54,272.70-21,423.20

Finding the Fourth Proportional to 39,328.25, 54,272.70 and 21,423.20

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Solution

The fourth proportional to 39,328.25, 54,272.70 and 21,423.20 is: 29,563.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,328.25 : 54,272.70 = 21,423.20 : x
  2. Step 2: Convert to fraction form
    39,328.25/54,272.70 = 21,423.20/x
  3. Step 3: Cross multiply
    39,328.25x = 54,272.70 × 21,423.20
  4. Step 4: Simplify right side
    39,328.25x = 1,162,694,906.64
  5. Step 5: Solve for x
    x = 1,162,694,906.64/39,328.25
  6. Step 6: Final answer
    x = 29,563.86

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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.