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Finding the Fourth Proportional to 11,807.30, 17,703.25 and 5,479.58

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Solution

The fourth proportional to 11,807.30, 17,703.25 and 5,479.58 is: 8,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.30 : 17,703.25 = 5,479.58 : x
  2. Step 2: Convert to fraction form
    11,807.30/17,703.25 = 5,479.58/x
  3. Step 3: Cross multiply
    11,807.30x = 17,703.25 × 5,479.58
  4. Step 4: Simplify right side
    11,807.30x = 97,006,374.64
  5. Step 5: Solve for x
    x = 97,006,374.64/11,807.30
  6. Step 6: Final answer
    x = 8,215.80

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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.