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Finding the Fourth Proportional to 9,684.40, 14,507.40 and 8,993.20

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Solution

The fourth proportional to 9,684.40, 14,507.40 and 8,993.20 is: 13,471.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,684.40 : 14,507.40 = 8,993.20 : x
  2. Step 2: Convert to fraction form
    9,684.40/14,507.40 = 8,993.20/x
  3. Step 3: Cross multiply
    9,684.40x = 14,507.40 × 8,993.20
  4. Step 4: Simplify right side
    9,684.40x = 130,467,949.68
  5. Step 5: Solve for x
    x = 130,467,949.68/9,684.40
  6. Step 6: Final answer
    x = 13,471.97

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1.5x scale

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.