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Finding the Fourth Proportional to 9,914.40, 14,866.80 and 5,527.20

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Solution

The fourth proportional to 9,914.40, 14,866.80 and 5,527.20 is: 8,288.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,914.40 : 14,866.80 = 5,527.20 : x
  2. Step 2: Convert to fraction form
    9,914.40/14,866.80 = 5,527.20/x
  3. Step 3: Cross multiply
    9,914.40x = 14,866.80 × 5,527.20
  4. Step 4: Simplify right side
    9,914.40x = 82,171,776.96
  5. Step 5: Solve for x
    x = 82,171,776.96/9,914.40
  6. Step 6: Final answer
    x = 8,288.12

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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.