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Finding the Fourth Proportional to 9,891.11, 13,656.10 and 8,827.05

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Solution

The fourth proportional to 9,891.11, 13,656.10 and 8,827.05 is: 12,187.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,891.11 : 13,656.10 = 8,827.05 : x
  2. Step 2: Convert to fraction form
    9,891.11/13,656.10 = 8,827.05/x
  3. Step 3: Cross multiply
    9,891.11x = 13,656.10 × 8,827.05
  4. Step 4: Simplify right side
    9,891.11x = 120,543,109.62
  5. Step 5: Solve for x
    x = 120,543,109.62/9,891.11
  6. Step 6: Final answer
    x = 12,187.01

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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.