Home / 21,875.44-30,185.37-12,314.14

Finding the Fourth Proportional to 21,875.44, 30,185.37 and 12,314.14

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Solution

The fourth proportional to 21,875.44, 30,185.37 and 12,314.14 is: 16,991.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.44 : 30,185.37 = 12,314.14 : x
  2. Step 2: Convert to fraction form
    21,875.44/30,185.37 = 12,314.14/x
  3. Step 3: Cross multiply
    21,875.44x = 30,185.37 × 12,314.14
  4. Step 4: Simplify right side
    21,875.44x = 371,706,872.13
  5. Step 5: Solve for x
    x = 371,706,872.13/21,875.44
  6. Step 6: Final answer
    x = 16,991.97

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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.