Home / 11,290.40-16,945.20-9,101.60

Finding the Fourth Proportional to 11,290.40, 16,945.20 and 9,101.60

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Solution

The fourth proportional to 11,290.40, 16,945.20 and 9,101.60 is: 13,660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,290.40 : 16,945.20 = 9,101.60 : x
  2. Step 2: Convert to fraction form
    11,290.40/16,945.20 = 9,101.60/x
  3. Step 3: Cross multiply
    11,290.40x = 16,945.20 × 9,101.60
  4. Step 4: Simplify right side
    11,290.40x = 154,228,432.32
  5. Step 5: Solve for x
    x = 154,228,432.32/11,290.40
  6. Step 6: Final answer
    x = 13,660.14

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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.