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Finding the Fourth Proportional to 11,399.60, 17,070.60 and 7,482.80

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Solution

The fourth proportional to 11,399.60, 17,070.60 and 7,482.80 is: 11,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.60 : 17,070.60 = 7,482.80 : x
  2. Step 2: Convert to fraction form
    11,399.60/17,070.60 = 7,482.80/x
  3. Step 3: Cross multiply
    11,399.60x = 17,070.60 × 7,482.80
  4. Step 4: Simplify right side
    11,399.60x = 127,735,885.68
  5. Step 5: Solve for x
    x = 127,735,885.68/11,399.60
  6. Step 6: Final answer
    x = 11,205.30

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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.