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Finding the Fourth Proportional to 20,133.74, 27,788.12 and 15,054.74

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Solution

The fourth proportional to 20,133.74, 27,788.12 and 15,054.74 is: 20,778.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,133.74 : 27,788.12 = 15,054.74 : x
  2. Step 2: Convert to fraction form
    20,133.74/27,788.12 = 15,054.74/x
  3. Step 3: Cross multiply
    20,133.74x = 27,788.12 × 15,054.74
  4. Step 4: Simplify right side
    20,133.74x = 418,342,921.69
  5. Step 5: Solve for x
    x = 418,342,921.69/20,133.74
  6. Step 6: Final answer
    x = 20,778.20

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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.