Home / 15,266.60-21,069.86-8,979.56

Finding the Fourth Proportional to 15,266.60, 21,069.86 and 8,979.56

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Solution

The fourth proportional to 15,266.60, 21,069.86 and 8,979.56 is: 12,392.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,266.60 : 21,069.86 = 8,979.56 : x
  2. Step 2: Convert to fraction form
    15,266.60/21,069.86 = 8,979.56/x
  3. Step 3: Cross multiply
    15,266.60x = 21,069.86 × 8,979.56
  4. Step 4: Simplify right side
    15,266.60x = 189,198,072.06
  5. Step 5: Solve for x
    x = 189,198,072.06/15,266.60
  6. Step 6: Final answer
    x = 12,392.94

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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.