Home / 11,306.40-16,969.20-9,117.60

Finding the Fourth Proportional to 11,306.40, 16,969.20 and 9,117.60

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Solution

The fourth proportional to 11,306.40, 16,969.20 and 9,117.60 is: 13,684.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,306.40 : 16,969.20 = 9,117.60 : x
  2. Step 2: Convert to fraction form
    11,306.40/16,969.20 = 9,117.60/x
  3. Step 3: Cross multiply
    11,306.40x = 16,969.20 × 9,117.60
  4. Step 4: Simplify right side
    11,306.40x = 154,718,377.92
  5. Step 5: Solve for x
    x = 154,718,377.92/11,306.40
  6. Step 6: Final answer
    x = 13,684.14

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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.