Home / 18,406.20-25,400.86-10,448.66

Finding the Fourth Proportional to 18,406.20, 25,400.86 and 10,448.66

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Solution

The fourth proportional to 18,406.20, 25,400.86 and 10,448.66 is: 14,419.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.20 : 25,400.86 = 10,448.66 : x
  2. Step 2: Convert to fraction form
    18,406.20/25,400.86 = 10,448.66/x
  3. Step 3: Cross multiply
    18,406.20x = 25,400.86 × 10,448.66
  4. Step 4: Simplify right side
    18,406.20x = 265,404,949.85
  5. Step 5: Solve for x
    x = 265,404,949.85/18,406.20
  6. Step 6: Final answer
    x = 14,419.32

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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.