Home / 30,618.05-42,251.56-17,189.04

Finding the Fourth Proportional to 30,618.05, 42,251.56 and 17,189.04

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Solution

The fourth proportional to 30,618.05, 42,251.56 and 17,189.04 is: 23,720.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.05 : 42,251.56 = 17,189.04 : x
  2. Step 2: Convert to fraction form
    30,618.05/42,251.56 = 17,189.04/x
  3. Step 3: Cross multiply
    30,618.05x = 42,251.56 × 17,189.04
  4. Step 4: Simplify right side
    30,618.05x = 726,263,711.93
  5. Step 5: Solve for x
    x = 726,263,711.93/30,618.05
  6. Step 6: Final answer
    x = 23,720.11

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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.