Home / 28,371.40-39,151.83-15,795.88

Finding the Fourth Proportional to 28,371.40, 39,151.83 and 15,795.88

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Solution

The fourth proportional to 28,371.40, 39,151.83 and 15,795.88 is: 21,797.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.40 : 39,151.83 = 15,795.88 : x
  2. Step 2: Convert to fraction form
    28,371.40/39,151.83 = 15,795.88/x
  3. Step 3: Cross multiply
    28,371.40x = 39,151.83 × 15,795.88
  4. Step 4: Simplify right side
    28,371.40x = 618,437,608.46
  5. Step 5: Solve for x
    x = 618,437,608.46/28,371.40
  6. Step 6: Final answer
    x = 21,797.92

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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.