Home / 30,920.43-42,670.20-17,491.41

Finding the Fourth Proportional to 30,920.43, 42,670.20 and 17,491.41

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Solution

The fourth proportional to 30,920.43, 42,670.20 and 17,491.41 is: 24,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,920.43 : 42,670.20 = 17,491.41 : x
  2. Step 2: Convert to fraction form
    30,920.43/42,670.20 = 17,491.41/x
  3. Step 3: Cross multiply
    30,920.43x = 42,670.20 × 17,491.41
  4. Step 4: Simplify right side
    30,920.43x = 746,361,962.98
  5. Step 5: Solve for x
    x = 746,361,962.98/30,920.43
  6. Step 6: Final answer
    x = 24,138.15

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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.