Home / 39,080.16-53,930.07-21,174.75

Finding the Fourth Proportional to 39,080.16, 53,930.07 and 21,174.75

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Solution

The fourth proportional to 39,080.16, 53,930.07 and 21,174.75 is: 29,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,080.16 : 53,930.07 = 21,174.75 : x
  2. Step 2: Convert to fraction form
    39,080.16/53,930.07 = 21,174.75/x
  3. Step 3: Cross multiply
    39,080.16x = 53,930.07 × 21,174.75
  4. Step 4: Simplify right side
    39,080.16x = 1,141,955,749.73
  5. Step 5: Solve for x
    x = 1,141,955,749.73/39,080.16
  6. Step 6: Final answer
    x = 29,220.86

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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.