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Finding the Fourth Proportional to 18,314.92, 25,274.60 and 9,931.42

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Solution

The fourth proportional to 18,314.92, 25,274.60 and 9,931.42 is: 13,705.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.92 : 25,274.60 = 9,931.42 : x
  2. Step 2: Convert to fraction form
    18,314.92/25,274.60 = 9,931.42/x
  3. Step 3: Cross multiply
    18,314.92x = 25,274.60 × 9,931.42
  4. Step 4: Simplify right side
    18,314.92x = 251,012,667.93
  5. Step 5: Solve for x
    x = 251,012,667.93/18,314.92
  6. Step 6: Final answer
    x = 13,705.37

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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.