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Finding the Fourth Proportional to 25,338.40, 38,015.70 and 8,709.10

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Solution

The fourth proportional to 25,338.40, 38,015.70 and 8,709.10 is: 13,066.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,338.40 : 38,015.70 = 8,709.10 : x
  2. Step 2: Convert to fraction form
    25,338.40/38,015.70 = 8,709.10/x
  3. Step 3: Cross multiply
    25,338.40x = 38,015.70 × 8,709.10
  4. Step 4: Simplify right side
    25,338.40x = 331,082,532.87
  5. Step 5: Solve for x
    x = 331,082,532.87/25,338.40
  6. Step 6: Final answer
    x = 13,066.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.