Home / 20,936.31-28,862.24-14,965.80

Finding the Fourth Proportional to 20,936.31, 28,862.24 and 14,965.80

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Solution

The fourth proportional to 20,936.31, 28,862.24 and 14,965.80 is: 20,631.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,936.31 : 28,862.24 = 14,965.80 : x
  2. Step 2: Convert to fraction form
    20,936.31/28,862.24 = 14,965.80/x
  3. Step 3: Cross multiply
    20,936.31x = 28,862.24 × 14,965.80
  4. Step 4: Simplify right side
    20,936.31x = 431,946,436.56
  5. Step 5: Solve for x
    x = 431,946,436.56/20,936.31
  6. Step 6: Final answer
    x = 20,631.45

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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.