Home / 27,817.29-38,366.75-20,149.36

Finding the Fourth Proportional to 27,817.29, 38,366.75 and 20,149.36

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Solution

The fourth proportional to 27,817.29, 38,366.75 and 20,149.36 is: 27,790.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,817.29 : 38,366.75 = 20,149.36 : x
  2. Step 2: Convert to fraction form
    27,817.29/38,366.75 = 20,149.36/x
  3. Step 3: Cross multiply
    27,817.29x = 38,366.75 × 20,149.36
  4. Step 4: Simplify right side
    27,817.29x = 773,065,412.24
  5. Step 5: Solve for x
    x = 773,065,412.24/27,817.29
  6. Step 6: Final answer
    x = 27,790.82

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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.