Home / 39,081.71-53,932.67-21,177.20

Finding the Fourth Proportional to 39,081.71, 53,932.67 and 21,177.20

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Solution

The fourth proportional to 39,081.71, 53,932.67 and 21,177.20 is: 29,224.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,081.71 : 53,932.67 = 21,177.20 : x
  2. Step 2: Convert to fraction form
    39,081.71/53,932.67 = 21,177.20/x
  3. Step 3: Cross multiply
    39,081.71x = 53,932.67 × 21,177.20
  4. Step 4: Simplify right side
    39,081.71x = 1,142,142,563.57
  5. Step 5: Solve for x
    x = 1,142,142,563.57/39,081.71
  6. Step 6: Final answer
    x = 29,224.48

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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.