Home / 21,968.82-30,313.98-12,407.13

Finding the Fourth Proportional to 21,968.82, 30,313.98 and 12,407.13

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Solution

The fourth proportional to 21,968.82, 30,313.98 and 12,407.13 is: 17,120.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,968.82 : 30,313.98 = 12,407.13 : x
  2. Step 2: Convert to fraction form
    21,968.82/30,313.98 = 12,407.13/x
  3. Step 3: Cross multiply
    21,968.82x = 30,313.98 × 12,407.13
  4. Step 4: Simplify right side
    21,968.82x = 376,109,490.68
  5. Step 5: Solve for x
    x = 376,109,490.68/21,968.82
  6. Step 6: Final answer
    x = 17,120.15

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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.