Home / 15,440.19-21,307.41-8,366.60

Finding the Fourth Proportional to 15,440.19, 21,307.41 and 8,366.60

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Solution

The fourth proportional to 15,440.19, 21,307.41 and 8,366.60 is: 11,545.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,440.19 : 21,307.41 = 8,366.60 : x
  2. Step 2: Convert to fraction form
    15,440.19/21,307.41 = 8,366.60/x
  3. Step 3: Cross multiply
    15,440.19x = 21,307.41 × 8,366.60
  4. Step 4: Simplify right side
    15,440.19x = 178,270,469.97
  5. Step 5: Solve for x
    x = 178,270,469.97/15,440.19
  6. Step 6: Final answer
    x = 11,545.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.