Home / 39,414.06-54,391.91-21,509.55

Finding the Fourth Proportional to 39,414.06, 54,391.91 and 21,509.55

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Solution

The fourth proportional to 39,414.06, 54,391.91 and 21,509.55 is: 29,683.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,414.06 : 54,391.91 = 21,509.55 : x
  2. Step 2: Convert to fraction form
    39,414.06/54,391.91 = 21,509.55/x
  3. Step 3: Cross multiply
    39,414.06x = 54,391.91 × 21,509.55
  4. Step 4: Simplify right side
    39,414.06x = 1,169,945,400.19
  5. Step 5: Solve for x
    x = 1,169,945,400.19/39,414.06
  6. Step 6: Final answer
    x = 29,683.45

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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.