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Finding the Fourth Proportional to 11,551.80, 17,325.30 and 4,978.20

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Solution

The fourth proportional to 11,551.80, 17,325.30 and 4,978.20 is: 7,466.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,551.80 : 17,325.30 = 4,978.20 : x
  2. Step 2: Convert to fraction form
    11,551.80/17,325.30 = 4,978.20/x
  3. Step 3: Cross multiply
    11,551.80x = 17,325.30 × 4,978.20
  4. Step 4: Simplify right side
    11,551.80x = 86,248,808.46
  5. Step 5: Solve for x
    x = 86,248,808.46/11,551.80
  6. Step 6: Final answer
    x = 7,466.27

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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.