Home / 28,632.27-39,511.19-15,885.31

Finding the Fourth Proportional to 28,632.27, 39,511.19 and 15,885.31

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Solution

The fourth proportional to 28,632.27, 39,511.19 and 15,885.31 is: 21,920.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,632.27 : 39,511.19 = 15,885.31 : x
  2. Step 2: Convert to fraction form
    28,632.27/39,511.19 = 15,885.31/x
  3. Step 3: Cross multiply
    28,632.27x = 39,511.19 × 15,885.31
  4. Step 4: Simplify right side
    28,632.27x = 627,647,679.70
  5. Step 5: Solve for x
    x = 627,647,679.70/28,632.27
  6. Step 6: Final answer
    x = 21,920.99

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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.