Home / 30,874.32-42,584.88-18,943.44

Finding the Fourth Proportional to 30,874.32, 42,584.88 and 18,943.44

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Solution

The fourth proportional to 30,874.32, 42,584.88 and 18,943.44 is: 26,128.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,874.32 : 42,584.88 = 18,943.44 : x
  2. Step 2: Convert to fraction form
    30,874.32/42,584.88 = 18,943.44/x
  3. Step 3: Cross multiply
    30,874.32x = 42,584.88 × 18,943.44
  4. Step 4: Simplify right side
    30,874.32x = 806,704,119.19
  5. Step 5: Solve for x
    x = 806,704,119.19/30,874.32
  6. Step 6: Final answer
    x = 26,128.64

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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.