Home / 28,195.36-38,909.17-15,448.44

Finding the Fourth Proportional to 28,195.36, 38,909.17 and 15,448.44

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Solution

The fourth proportional to 28,195.36, 38,909.17 and 15,448.44 is: 21,318.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,195.36 : 38,909.17 = 15,448.44 : x
  2. Step 2: Convert to fraction form
    28,195.36/38,909.17 = 15,448.44/x
  3. Step 3: Cross multiply
    28,195.36x = 38,909.17 × 15,448.44
  4. Step 4: Simplify right side
    28,195.36x = 601,085,978.19
  5. Step 5: Solve for x
    x = 601,085,978.19/28,195.36
  6. Step 6: Final answer
    x = 21,318.61

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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.