Home / 30,971.62-42,737.70-17,540.20

Finding the Fourth Proportional to 30,971.62, 42,737.70 and 17,540.20

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Solution

The fourth proportional to 30,971.62, 42,737.70 and 17,540.20 is: 24,203.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,971.62 : 42,737.70 = 17,540.20 : x
  2. Step 2: Convert to fraction form
    30,971.62/42,737.70 = 17,540.20/x
  3. Step 3: Cross multiply
    30,971.62x = 42,737.70 × 17,540.20
  4. Step 4: Simplify right side
    30,971.62x = 749,627,805.54
  5. Step 5: Solve for x
    x = 749,627,805.54/30,971.62
  6. Step 6: Final answer
    x = 24,203.70

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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.