Home / 21,960.41-30,293.07-12,999.18

Finding the Fourth Proportional to 21,960.41, 30,293.07 and 12,999.18

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Solution

The fourth proportional to 21,960.41, 30,293.07 and 12,999.18 is: 17,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.41 : 30,293.07 = 12,999.18 : x
  2. Step 2: Convert to fraction form
    21,960.41/30,293.07 = 12,999.18/x
  3. Step 3: Cross multiply
    21,960.41x = 30,293.07 × 12,999.18
  4. Step 4: Simplify right side
    21,960.41x = 393,784,993.95
  5. Step 5: Solve for x
    x = 393,784,993.95/21,960.41
  6. Step 6: Final answer
    x = 17,931.59

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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.