Home / 30,880.38-42,621.08-17,451.80

Finding the Fourth Proportional to 30,880.38, 42,621.08 and 17,451.80

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Solution

The fourth proportional to 30,880.38, 42,621.08 and 17,451.80 is: 24,086.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,880.38 : 42,621.08 = 17,451.80 : x
  2. Step 2: Convert to fraction form
    30,880.38/42,621.08 = 17,451.80/x
  3. Step 3: Cross multiply
    30,880.38x = 42,621.08 × 17,451.80
  4. Step 4: Simplify right side
    30,880.38x = 743,814,263.58
  5. Step 5: Solve for x
    x = 743,814,263.58/30,880.38
  6. Step 6: Final answer
    x = 24,086.95

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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.