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Finding the Fourth Proportional to 9,855.55, 13,596.78 and 6,499.99

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Solution

The fourth proportional to 9,855.55, 13,596.78 and 6,499.99 is: 8,967.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.55 : 13,596.78 = 6,499.99 : x
  2. Step 2: Convert to fraction form
    9,855.55/13,596.78 = 6,499.99/x
  3. Step 3: Cross multiply
    9,855.55x = 13,596.78 × 6,499.99
  4. Step 4: Simplify right side
    9,855.55x = 88,378,934.03
  5. Step 5: Solve for x
    x = 88,378,934.03/9,855.55
  6. Step 6: Final answer
    x = 8,967.43

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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.