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Finding the Fourth Proportional to 11,380.40, 17,070.60 and 9,436.40

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Solution

The fourth proportional to 11,380.40, 17,070.60 and 9,436.40 is: 14,154.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,380.40 : 17,070.60 = 9,436.40 : x
  2. Step 2: Convert to fraction form
    11,380.40/17,070.60 = 9,436.40/x
  3. Step 3: Cross multiply
    11,380.40x = 17,070.60 × 9,436.40
  4. Step 4: Simplify right side
    11,380.40x = 161,085,009.84
  5. Step 5: Solve for x
    x = 161,085,009.84/11,380.40
  6. Step 6: Final answer
    x = 14,154.60

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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.