Home / 28,062.97-38,710.07-20,500.05

Finding the Fourth Proportional to 28,062.97, 38,710.07 and 20,500.05

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Solution

The fourth proportional to 28,062.97, 38,710.07 and 20,500.05 is: 28,277.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,062.97 : 38,710.07 = 20,500.05 : x
  2. Step 2: Convert to fraction form
    28,062.97/38,710.07 = 20,500.05/x
  3. Step 3: Cross multiply
    28,062.97x = 38,710.07 × 20,500.05
  4. Step 4: Simplify right side
    28,062.97x = 793,558,369.98
  5. Step 5: Solve for x
    x = 793,558,369.98/28,062.97
  6. Step 6: Final answer
    x = 28,277.78

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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.