Home / 20,201.81-27,904.77-15,392.43

Finding the Fourth Proportional to 20,201.81, 27,904.77 and 15,392.43

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Solution

The fourth proportional to 20,201.81, 27,904.77 and 15,392.43 is: 21,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,201.81 : 27,904.77 = 15,392.43 : x
  2. Step 2: Convert to fraction form
    20,201.81/27,904.77 = 15,392.43/x
  3. Step 3: Cross multiply
    20,201.81x = 27,904.77 × 15,392.43
  4. Step 4: Simplify right side
    20,201.81x = 429,522,218.89
  5. Step 5: Solve for x
    x = 429,522,218.89/20,201.81
  6. Step 6: Final answer
    x = 21,261.58

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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.