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Finding the Fourth Proportional to 18,361.98, 25,340.40 and 10,404.36

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Solution

The fourth proportional to 18,361.98, 25,340.40 and 10,404.36 is: 14,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.98 : 25,340.40 = 10,404.36 : x
  2. Step 2: Convert to fraction form
    18,361.98/25,340.40 = 10,404.36/x
  3. Step 3: Cross multiply
    18,361.98x = 25,340.40 × 10,404.36
  4. Step 4: Simplify right side
    18,361.98x = 263,650,644.14
  5. Step 5: Solve for x
    x = 263,650,644.14/18,361.98
  6. Step 6: Final answer
    x = 14,358.51

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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.