Home / 31,284.20-43,168.10-18,704.36

Finding the Fourth Proportional to 31,284.20, 43,168.10 and 18,704.36

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Solution

The fourth proportional to 31,284.20, 43,168.10 and 18,704.36 is: 25,809.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,284.20 : 43,168.10 = 18,704.36 : x
  2. Step 2: Convert to fraction form
    31,284.20/43,168.10 = 18,704.36/x
  3. Step 3: Cross multiply
    31,284.20x = 43,168.10 × 18,704.36
  4. Step 4: Simplify right side
    31,284.20x = 807,431,682.92
  5. Step 5: Solve for x
    x = 807,431,682.92/31,284.20
  6. Step 6: Final answer
    x = 25,809.57

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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.