Home / 27,751.44-38,295.36-15,813.12

Finding the Fourth Proportional to 27,751.44, 38,295.36 and 15,813.12

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Solution

The fourth proportional to 27,751.44, 38,295.36 and 15,813.12 is: 21,821.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,751.44 : 38,295.36 = 15,813.12 : x
  2. Step 2: Convert to fraction form
    27,751.44/38,295.36 = 15,813.12/x
  3. Step 3: Cross multiply
    27,751.44x = 38,295.36 × 15,813.12
  4. Step 4: Simplify right side
    27,751.44x = 605,569,123.12
  5. Step 5: Solve for x
    x = 605,569,123.12/27,751.44
  6. Step 6: Final answer
    x = 21,821.18

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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.