Home / 39,355.92-54,309.28-21,450.84

Finding the Fourth Proportional to 39,355.92, 54,309.28 and 21,450.84

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Solution

The fourth proportional to 39,355.92, 54,309.28 and 21,450.84 is: 29,601.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,355.92 : 54,309.28 = 21,450.84 : x
  2. Step 2: Convert to fraction form
    39,355.92/54,309.28 = 21,450.84/x
  3. Step 3: Cross multiply
    39,355.92x = 54,309.28 × 21,450.84
  4. Step 4: Simplify right side
    39,355.92x = 1,164,979,675.80
  5. Step 5: Solve for x
    x = 1,164,979,675.80/39,355.92
  6. Step 6: Final answer
    x = 29,601.13

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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.