Home / 30,618.59-42,250.39-17,191.31

Finding the Fourth Proportional to 30,618.59, 42,250.39 and 17,191.31

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Solution

The fourth proportional to 30,618.59, 42,250.39 and 17,191.31 is: 23,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.59 : 42,250.39 = 17,191.31 : x
  2. Step 2: Convert to fraction form
    30,618.59/42,250.39 = 17,191.31/x
  3. Step 3: Cross multiply
    30,618.59x = 42,250.39 × 17,191.31
  4. Step 4: Simplify right side
    30,618.59x = 726,339,297.88
  5. Step 5: Solve for x
    x = 726,339,297.88/30,618.59
  6. Step 6: Final answer
    x = 23,722.17

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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.