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Finding the Fourth Proportional to 11,419.84, 17,090.88 and 8,834.32

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Solution

The fourth proportional to 11,419.84, 17,090.88 and 8,834.32 is: 13,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,419.84 : 17,090.88 = 8,834.32 : x
  2. Step 2: Convert to fraction form
    11,419.84/17,090.88 = 8,834.32/x
  3. Step 3: Cross multiply
    11,419.84x = 17,090.88 × 8,834.32
  4. Step 4: Simplify right side
    11,419.84x = 150,986,303.00
  5. Step 5: Solve for x
    x = 150,986,303.00/11,419.84
  6. Step 6: Final answer
    x = 13,221.40

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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.