Home / 28,371.84-39,150.72-15,797.76

Finding the Fourth Proportional to 28,371.84, 39,150.72 and 15,797.76

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Solution

The fourth proportional to 28,371.84, 39,150.72 and 15,797.76 is: 21,799.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.84 : 39,150.72 = 15,797.76 : x
  2. Step 2: Convert to fraction form
    28,371.84/39,150.72 = 15,797.76/x
  3. Step 3: Cross multiply
    28,371.84x = 39,150.72 × 15,797.76
  4. Step 4: Simplify right side
    28,371.84x = 618,493,678.39
  5. Step 5: Solve for x
    x = 618,493,678.39/28,371.84
  6. Step 6: Final answer
    x = 21,799.56

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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.