Home / 21,801.41-30,084.90-12,240.12

Finding the Fourth Proportional to 21,801.41, 30,084.90 and 12,240.12

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Solution

The fourth proportional to 21,801.41, 30,084.90 and 12,240.12 is: 16,890.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,801.41 : 30,084.90 = 12,240.12 : x
  2. Step 2: Convert to fraction form
    21,801.41/30,084.90 = 12,240.12/x
  3. Step 3: Cross multiply
    21,801.41x = 30,084.90 × 12,240.12
  4. Step 4: Simplify right side
    21,801.41x = 368,242,876.06
  5. Step 5: Solve for x
    x = 368,242,876.06/21,801.41
  6. Step 6: Final answer
    x = 16,890.78

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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.