Home / 20,293.02-27,989.55-13,566.78

Finding the Fourth Proportional to 20,293.02, 27,989.55 and 13,566.78

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Solution

The fourth proportional to 20,293.02, 27,989.55 and 13,566.78 is: 18,712.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.02 : 27,989.55 = 13,566.78 : x
  2. Step 2: Convert to fraction form
    20,293.02/27,989.55 = 13,566.78/x
  3. Step 3: Cross multiply
    20,293.02x = 27,989.55 × 13,566.78
  4. Step 4: Simplify right side
    20,293.02x = 379,728,067.15
  5. Step 5: Solve for x
    x = 379,728,067.15/20,293.02
  6. Step 6: Final answer
    x = 18,712.25

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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.