Home / 30,581.70-42,203.17-18,480.52

Finding the Fourth Proportional to 30,581.70, 42,203.17 and 18,480.52

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Solution

The fourth proportional to 30,581.70, 42,203.17 and 18,480.52 is: 25,503.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,581.70 : 42,203.17 = 18,480.52 : x
  2. Step 2: Convert to fraction form
    30,581.70/42,203.17 = 18,480.52/x
  3. Step 3: Cross multiply
    30,581.70x = 42,203.17 × 18,480.52
  4. Step 4: Simplify right side
    30,581.70x = 779,936,527.25
  5. Step 5: Solve for x
    x = 779,936,527.25/30,581.70
  6. Step 6: Final answer
    x = 25,503.37

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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.