Home / 9,979.36-14,969.10-4,135.90

Finding the Fourth Proportional to 9,979.36, 14,969.10 and 4,135.90

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Solution

The fourth proportional to 9,979.36, 14,969.10 and 4,135.90 is: 6,203.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.36 : 14,969.10 = 4,135.90 : x
  2. Step 2: Convert to fraction form
    9,979.36/14,969.10 = 4,135.90/x
  3. Step 3: Cross multiply
    9,979.36x = 14,969.10 × 4,135.90
  4. Step 4: Simplify right side
    9,979.36x = 61,910,700.69
  5. Step 5: Solve for x
    x = 61,910,700.69/9,979.36
  6. Step 6: Final answer
    x = 6,203.87

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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.