Home / 15,928.50-21,979.35-8,854.02

Finding the Fourth Proportional to 15,928.50, 21,979.35 and 8,854.02

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Solution

The fourth proportional to 15,928.50, 21,979.35 and 8,854.02 is: 12,217.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,928.50 : 21,979.35 = 8,854.02 : x
  2. Step 2: Convert to fraction form
    15,928.50/21,979.35 = 8,854.02/x
  3. Step 3: Cross multiply
    15,928.50x = 21,979.35 × 8,854.02
  4. Step 4: Simplify right side
    15,928.50x = 194,605,604.49
  5. Step 5: Solve for x
    x = 194,605,604.49/15,928.50
  6. Step 6: Final answer
    x = 12,217.45

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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.