Home / 21,960.20-32,940.30-13,212.20

Finding the Fourth Proportional to 21,960.20, 32,940.30 and 13,212.20

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Solution

The fourth proportional to 21,960.20, 32,940.30 and 13,212.20 is: 19,818.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.20 : 32,940.30 = 13,212.20 : x
  2. Step 2: Convert to fraction form
    21,960.20/32,940.30 = 13,212.20/x
  3. Step 3: Cross multiply
    21,960.20x = 32,940.30 × 13,212.20
  4. Step 4: Simplify right side
    21,960.20x = 435,213,831.66
  5. Step 5: Solve for x
    x = 435,213,831.66/21,960.20
  6. Step 6: Final answer
    x = 19,818.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.