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Finding the Fourth Proportional to 11,307.80, 15,604.84 and 6,271.92

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Solution

The fourth proportional to 11,307.80, 15,604.84 and 6,271.92 is: 8,655.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.80 : 15,604.84 = 6,271.92 : x
  2. Step 2: Convert to fraction form
    11,307.80/15,604.84 = 6,271.92/x
  3. Step 3: Cross multiply
    11,307.80x = 15,604.84 × 6,271.92
  4. Step 4: Simplify right side
    11,307.80x = 97,872,308.09
  5. Step 5: Solve for x
    x = 97,872,308.09/11,307.80
  6. Step 6: Final answer
    x = 8,655.29

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.