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Finding the Fourth Proportional to 11,895.66, 17,830.62 and 5,312.79

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Solution

The fourth proportional to 11,895.66, 17,830.62 and 5,312.79 is: 7,963.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,895.66 : 17,830.62 = 5,312.79 : x
  2. Step 2: Convert to fraction form
    11,895.66/17,830.62 = 5,312.79/x
  3. Step 3: Cross multiply
    11,895.66x = 17,830.62 × 5,312.79
  4. Step 4: Simplify right side
    11,895.66x = 94,730,339.63
  5. Step 5: Solve for x
    x = 94,730,339.63/11,895.66
  6. Step 6: Final answer
    x = 7,963.44

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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.