Home / 30,800.76-42,503.54-17,371.97

Finding the Fourth Proportional to 30,800.76, 42,503.54 and 17,371.97

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Solution

The fourth proportional to 30,800.76, 42,503.54 and 17,371.97 is: 23,972.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,800.76 : 42,503.54 = 17,371.97 : x
  2. Step 2: Convert to fraction form
    30,800.76/42,503.54 = 17,371.97/x
  3. Step 3: Cross multiply
    30,800.76x = 42,503.54 × 17,371.97
  4. Step 4: Simplify right side
    30,800.76x = 738,370,081.78
  5. Step 5: Solve for x
    x = 738,370,081.78/30,800.76
  6. Step 6: Final answer
    x = 23,972.47

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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.