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Finding the Fourth Proportional to 9,936.40, 14,914.20 and 8,477.20

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Solution

The fourth proportional to 9,936.40, 14,914.20 and 8,477.20 is: 12,723.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.40 : 14,914.20 = 8,477.20 : x
  2. Step 2: Convert to fraction form
    9,936.40/14,914.20 = 8,477.20/x
  3. Step 3: Cross multiply
    9,936.40x = 14,914.20 × 8,477.20
  4. Step 4: Simplify right side
    9,936.40x = 126,430,656.24
  5. Step 5: Solve for x
    x = 126,430,656.24/9,936.40
  6. Step 6: Final answer
    x = 12,723.99

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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.