Home / 15,928.95-21,982.17-8,855.52

Finding the Fourth Proportional to 15,928.95, 21,982.17 and 8,855.52

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Solution

The fourth proportional to 15,928.95, 21,982.17 and 8,855.52 is: 12,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.95 : 21,982.17 = 8,855.52 : x
  2. Step 2: Convert to fraction form
    15,928.95/21,982.17 = 8,855.52/x
  3. Step 3: Cross multiply
    15,928.95x = 21,982.17 × 8,855.52
  4. Step 4: Simplify right side
    15,928.95x = 194,663,501.80
  5. Step 5: Solve for x
    x = 194,663,501.80/15,928.95
  6. Step 6: Final answer
    x = 12,220.74

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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.