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Finding the Fourth Proportional to 9,904.15, 13,668.10 and 5,655.90

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Solution

The fourth proportional to 9,904.15, 13,668.10 and 5,655.90 is: 7,805.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904.15 : 13,668.10 = 5,655.90 : x
  2. Step 2: Convert to fraction form
    9,904.15/13,668.10 = 5,655.90/x
  3. Step 3: Cross multiply
    9,904.15x = 13,668.10 × 5,655.90
  4. Step 4: Simplify right side
    9,904.15x = 77,305,406.79
  5. Step 5: Solve for x
    x = 77,305,406.79/9,904.15
  6. Step 6: Final answer
    x = 7,805.36

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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.