Home / 15,348.32-21,179.19-8,636.27

Finding the Fourth Proportional to 15,348.32, 21,179.19 and 8,636.27

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Solution

The fourth proportional to 15,348.32, 21,179.19 and 8,636.27 is: 11,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.32 : 21,179.19 = 8,636.27 : x
  2. Step 2: Convert to fraction form
    15,348.32/21,179.19 = 8,636.27/x
  3. Step 3: Cross multiply
    15,348.32x = 21,179.19 × 8,636.27
  4. Step 4: Simplify right side
    15,348.32x = 182,909,097.33
  5. Step 5: Solve for x
    x = 182,909,097.33/15,348.32
  6. Step 6: Final answer
    x = 11,917.21

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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.