Home / 39,223.65-54,128.97-21,318.66

Finding the Fourth Proportional to 39,223.65, 54,128.97 and 21,318.66

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Solution

The fourth proportional to 39,223.65, 54,128.97 and 21,318.66 is: 29,419.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,223.65 : 54,128.97 = 21,318.66 : x
  2. Step 2: Convert to fraction form
    39,223.65/54,128.97 = 21,318.66/x
  3. Step 3: Cross multiply
    39,223.65x = 54,128.97 × 21,318.66
  4. Step 4: Simplify right side
    39,223.65x = 1,153,957,107.58
  5. Step 5: Solve for x
    x = 1,153,957,107.58/39,223.65
  6. Step 6: Final answer
    x = 29,419.93

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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.