Home / 39,219.65-54,121.61-21,314.25

Finding the Fourth Proportional to 39,219.65, 54,121.61 and 21,314.25

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Solution

The fourth proportional to 39,219.65, 54,121.61 and 21,314.25 is: 29,412.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,219.65 : 54,121.61 = 21,314.25 : x
  2. Step 2: Convert to fraction form
    39,219.65/54,121.61 = 21,314.25/x
  3. Step 3: Cross multiply
    39,219.65x = 54,121.61 × 21,314.25
  4. Step 4: Simplify right side
    39,219.65x = 1,153,561,419.37
  5. Step 5: Solve for x
    x = 1,153,561,419.37/39,219.65
  6. Step 6: Final answer
    x = 29,412.85

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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.