Home / 20,293.44-27,986.82-12,740.47

Finding the Fourth Proportional to 20,293.44, 27,986.82 and 12,740.47

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Solution

The fourth proportional to 20,293.44, 27,986.82 and 12,740.47 is: 17,570.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.44 : 27,986.82 = 12,740.47 : x
  2. Step 2: Convert to fraction form
    20,293.44/27,986.82 = 12,740.47/x
  3. Step 3: Cross multiply
    20,293.44x = 27,986.82 × 12,740.47
  4. Step 4: Simplify right side
    20,293.44x = 356,565,240.61
  5. Step 5: Solve for x
    x = 356,565,240.61/20,293.44
  6. Step 6: Final answer
    x = 17,570.47

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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.