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Finding the Fourth Proportional to 18,177.79, 25,097.79 and 13,921.34

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Solution

The fourth proportional to 18,177.79, 25,097.79 and 13,921.34 is: 19,220.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,177.79 : 25,097.79 = 13,921.34 : x
  2. Step 2: Convert to fraction form
    18,177.79/25,097.79 = 13,921.34/x
  3. Step 3: Cross multiply
    18,177.79x = 25,097.79 × 13,921.34
  4. Step 4: Simplify right side
    18,177.79x = 349,394,867.84
  5. Step 5: Solve for x
    x = 349,394,867.84/18,177.79
  6. Step 6: Final answer
    x = 19,220.98

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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.