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Finding the Fourth Proportional to 8,811.36, 13,225.68 and 8,770.32

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Solution

The fourth proportional to 8,811.36, 13,225.68 and 8,770.32 is: 13,164.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,811.36 : 13,225.68 = 8,770.32 : x
  2. Step 2: Convert to fraction form
    8,811.36/13,225.68 = 8,770.32/x
  3. Step 3: Cross multiply
    8,811.36x = 13,225.68 × 8,770.32
  4. Step 4: Simplify right side
    8,811.36x = 115,993,445.82
  5. Step 5: Solve for x
    x = 115,993,445.82/8,811.36
  6. Step 6: Final answer
    x = 13,164.08

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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.