Home / 21,917.70-30,246.75-12,486.06

Finding the Fourth Proportional to 21,917.70, 30,246.75 and 12,486.06

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Solution

The fourth proportional to 21,917.70, 30,246.75 and 12,486.06 is: 17,230.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.70 : 30,246.75 = 12,486.06 : x
  2. Step 2: Convert to fraction form
    21,917.70/30,246.75 = 12,486.06/x
  3. Step 3: Cross multiply
    21,917.70x = 30,246.75 × 12,486.06
  4. Step 4: Simplify right side
    21,917.70x = 377,662,735.31
  5. Step 5: Solve for x
    x = 377,662,735.31/21,917.70
  6. Step 6: Final answer
    x = 17,230.95

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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.