Home / 15,725.39-21,705.62-9,356.44

Finding the Fourth Proportional to 15,725.39, 21,705.62 and 9,356.44

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Solution

The fourth proportional to 15,725.39, 21,705.62 and 9,356.44 is: 12,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,725.39 : 21,705.62 = 9,356.44 : x
  2. Step 2: Convert to fraction form
    15,725.39/21,705.62 = 9,356.44/x
  3. Step 3: Cross multiply
    15,725.39x = 21,705.62 × 9,356.44
  4. Step 4: Simplify right side
    15,725.39x = 203,087,331.19
  5. Step 5: Solve for x
    x = 203,087,331.19/15,725.39
  6. Step 6: Final answer
    x = 12,914.61

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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.