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Finding the Fourth Proportional to 18,406.83, 25,401.54 and 10,449.19

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Solution

The fourth proportional to 18,406.83, 25,401.54 and 10,449.19 is: 14,419.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.83 : 25,401.54 = 10,449.19 : x
  2. Step 2: Convert to fraction form
    18,406.83/25,401.54 = 10,449.19/x
  3. Step 3: Cross multiply
    18,406.83x = 25,401.54 × 10,449.19
  4. Step 4: Simplify right side
    18,406.83x = 265,425,517.75
  5. Step 5: Solve for x
    x = 265,425,517.75/18,406.83
  6. Step 6: Final answer
    x = 14,419.95

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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.