Home / 21,960.80-32,941.20-13,205.60

Finding the Fourth Proportional to 21,960.80, 32,941.20 and 13,205.60

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Solution

The fourth proportional to 21,960.80, 32,941.20 and 13,205.60 is: 19,808.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,960.80 : 32,941.20 = 13,205.60 : x
  2. Step 2: Convert to fraction form
    21,960.80/32,941.20 = 13,205.60/x
  3. Step 3: Cross multiply
    21,960.80x = 32,941.20 × 13,205.60
  4. Step 4: Simplify right side
    21,960.80x = 435,008,310.72
  5. Step 5: Solve for x
    x = 435,008,310.72/21,960.80
  6. Step 6: Final answer
    x = 19,808.40

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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.