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Finding the Fourth Proportional to 18,361.79, 25,340.29 and 10,406.58

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Solution

The fourth proportional to 18,361.79, 25,340.29 and 10,406.58 is: 14,361.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,361.79 : 25,340.29 = 10,406.58 : x
  2. Step 2: Convert to fraction form
    18,361.79/25,340.29 = 10,406.58/x
  3. Step 3: Cross multiply
    18,361.79x = 25,340.29 × 10,406.58
  4. Step 4: Simplify right side
    18,361.79x = 263,705,755.11
  5. Step 5: Solve for x
    x = 263,705,755.11/18,361.79
  6. Step 6: Final answer
    x = 14,361.66

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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.