Home / 20,548.07-28,356.13-11,116.43

Finding the Fourth Proportional to 20,548.07, 28,356.13 and 11,116.43

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Solution

The fourth proportional to 20,548.07, 28,356.13 and 11,116.43 is: 15,340.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,548.07 : 28,356.13 = 11,116.43 : x
  2. Step 2: Convert to fraction form
    20,548.07/28,356.13 = 11,116.43/x
  3. Step 3: Cross multiply
    20,548.07x = 28,356.13 × 11,116.43
  4. Step 4: Simplify right side
    20,548.07x = 315,218,934.22
  5. Step 5: Solve for x
    x = 315,218,934.22/20,548.07
  6. Step 6: Final answer
    x = 15,340.56

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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.