Home / 30,619.79-42,253.94-17,190.80

Finding the Fourth Proportional to 30,619.79, 42,253.94 and 17,190.80

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Solution

The fourth proportional to 30,619.79, 42,253.94 and 17,190.80 is: 23,722.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,619.79 : 42,253.94 = 17,190.80 : x
  2. Step 2: Convert to fraction form
    30,619.79/42,253.94 = 17,190.80/x
  3. Step 3: Cross multiply
    30,619.79x = 42,253.94 × 17,190.80
  4. Step 4: Simplify right side
    30,619.79x = 726,378,734.53
  5. Step 5: Solve for x
    x = 726,378,734.53/30,619.79
  6. Step 6: Final answer
    x = 23,722.53

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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.