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Finding the Fourth Proportional to 9,986.10, 14,979.15 and 8,042.10

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Solution

The fourth proportional to 9,986.10, 14,979.15 and 8,042.10 is: 12,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,986.10 : 14,979.15 = 8,042.10 : x
  2. Step 2: Convert to fraction form
    9,986.10/14,979.15 = 8,042.10/x
  3. Step 3: Cross multiply
    9,986.10x = 14,979.15 × 8,042.10
  4. Step 4: Simplify right side
    9,986.10x = 120,463,822.22
  5. Step 5: Solve for x
    x = 120,463,822.22/9,986.10
  6. Step 6: Final answer
    x = 12,063.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.