Home / 11,620.71-16,040.79-7,150.44

Finding the Fourth Proportional to 11,620.71, 16,040.79 and 7,150.44

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Solution

The fourth proportional to 11,620.71, 16,040.79 and 7,150.44 is: 9,870.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.71 : 16,040.79 = 7,150.44 : x
  2. Step 2: Convert to fraction form
    11,620.71/16,040.79 = 7,150.44/x
  3. Step 3: Cross multiply
    11,620.71x = 16,040.79 × 7,150.44
  4. Step 4: Simplify right side
    11,620.71x = 114,698,706.45
  5. Step 5: Solve for x
    x = 114,698,706.45/11,620.71
  6. Step 6: Final answer
    x = 9,870.20

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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.