Home / 30,618.54-42,253.20-17,189.44

Finding the Fourth Proportional to 30,618.54, 42,253.20 and 17,189.44

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Solution

The fourth proportional to 30,618.54, 42,253.20 and 17,189.44 is: 23,721.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.54 : 42,253.20 = 17,189.44 : x
  2. Step 2: Convert to fraction form
    30,618.54/42,253.20 = 17,189.44/x
  3. Step 3: Cross multiply
    30,618.54x = 42,253.20 × 17,189.44
  4. Step 4: Simplify right side
    30,618.54x = 726,308,846.21
  5. Step 5: Solve for x
    x = 726,308,846.21/30,618.54
  6. Step 6: Final answer
    x = 23,721.21

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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.