Home / 20,957.13-28,932.80-13,893.12

Finding the Fourth Proportional to 20,957.13, 28,932.80 and 13,893.12

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Solution

The fourth proportional to 20,957.13, 28,932.80 and 13,893.12 is: 19,180.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,957.13 : 28,932.80 = 13,893.12 : x
  2. Step 2: Convert to fraction form
    20,957.13/28,932.80 = 13,893.12/x
  3. Step 3: Cross multiply
    20,957.13x = 28,932.80 × 13,893.12
  4. Step 4: Simplify right side
    20,957.13x = 401,966,792.87
  5. Step 5: Solve for x
    x = 401,966,792.87/20,957.13
  6. Step 6: Final answer
    x = 19,180.43

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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.