Home / 11,639.20-17,458.80-11,466.40

Finding the Fourth Proportional to 11,639.20, 17,458.80 and 11,466.40

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Solution

The fourth proportional to 11,639.20, 17,458.80 and 11,466.40 is: 17,199.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,639.20 : 17,458.80 = 11,466.40 : x
  2. Step 2: Convert to fraction form
    11,639.20/17,458.80 = 11,466.40/x
  3. Step 3: Cross multiply
    11,639.20x = 17,458.80 × 11,466.40
  4. Step 4: Simplify right side
    11,639.20x = 200,189,584.32
  5. Step 5: Solve for x
    x = 200,189,584.32/11,639.20
  6. Step 6: Final answer
    x = 17,199.60

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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.