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Finding the Fourth Proportional to 9,908.70, 13,651.02 and 6,919.80

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Solution

The fourth proportional to 9,908.70, 13,651.02 and 6,919.80 is: 9,533.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908.70 : 13,651.02 = 6,919.80 : x
  2. Step 2: Convert to fraction form
    9,908.70/13,651.02 = 6,919.80/x
  3. Step 3: Cross multiply
    9,908.70x = 13,651.02 × 6,919.80
  4. Step 4: Simplify right side
    9,908.70x = 94,462,328.20
  5. Step 5: Solve for x
    x = 94,462,328.20/9,908.70
  6. Step 6: Final answer
    x = 9,533.27

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1.5x scale

Why These Related Problems?

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