Home / 20,940.28-31,407.15-13,596.82

Finding the Fourth Proportional to 20,940.28, 31,407.15 and 13,596.82

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Solution

The fourth proportional to 20,940.28, 31,407.15 and 13,596.82 is: 20,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,940.28 : 31,407.15 = 13,596.82 : x
  2. Step 2: Convert to fraction form
    20,940.28/31,407.15 = 13,596.82/x
  3. Step 3: Cross multiply
    20,940.28x = 31,407.15 × 13,596.82
  4. Step 4: Simplify right side
    20,940.28x = 427,037,365.26
  5. Step 5: Solve for x
    x = 427,037,365.26/20,940.28
  6. Step 6: Final answer
    x = 20,393.11

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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.