Home / 20,469.49-28,246.38-11,395.19

Finding the Fourth Proportional to 20,469.49, 28,246.38 and 11,395.19

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Solution

The fourth proportional to 20,469.49, 28,246.38 and 11,395.19 is: 15,724.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,469.49 : 28,246.38 = 11,395.19 : x
  2. Step 2: Convert to fraction form
    20,469.49/28,246.38 = 11,395.19/x
  3. Step 3: Cross multiply
    20,469.49x = 28,246.38 × 11,395.19
  4. Step 4: Simplify right side
    20,469.49x = 321,872,866.91
  5. Step 5: Solve for x
    x = 321,872,866.91/20,469.49
  6. Step 6: Final answer
    x = 15,724.52

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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.