Home / 15,033.51-20,745.81-8,318.97

Finding the Fourth Proportional to 15,033.51, 20,745.81 and 8,318.97

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Solution

The fourth proportional to 15,033.51, 20,745.81 and 8,318.97 is: 11,479.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,033.51 : 20,745.81 = 8,318.97 : x
  2. Step 2: Convert to fraction form
    15,033.51/20,745.81 = 8,318.97/x
  3. Step 3: Cross multiply
    15,033.51x = 20,745.81 × 8,318.97
  4. Step 4: Simplify right side
    15,033.51x = 172,583,771.02
  5. Step 5: Solve for x
    x = 172,583,771.02/15,033.51
  6. Step 6: Final answer
    x = 11,479.94

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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.