Home / 21,863.31-30,169.98-12,302.34

Finding the Fourth Proportional to 21,863.31, 30,169.98 and 12,302.34

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Solution

The fourth proportional to 21,863.31, 30,169.98 and 12,302.34 is: 16,976.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,863.31 : 30,169.98 = 12,302.34 : x
  2. Step 2: Convert to fraction form
    21,863.31/30,169.98 = 12,302.34/x
  3. Step 3: Cross multiply
    21,863.31x = 30,169.98 × 12,302.34
  4. Step 4: Simplify right side
    21,863.31x = 371,161,351.75
  5. Step 5: Solve for x
    x = 371,161,351.75/21,863.31
  6. Step 6: Final answer
    x = 16,976.45

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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.