Home / 30,960.33-42,724.88-16,813.28

Finding the Fourth Proportional to 30,960.33, 42,724.88 and 16,813.28

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Solution

The fourth proportional to 30,960.33, 42,724.88 and 16,813.28 is: 23,202.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,960.33 : 42,724.88 = 16,813.28 : x
  2. Step 2: Convert to fraction form
    30,960.33/42,724.88 = 16,813.28/x
  3. Step 3: Cross multiply
    30,960.33x = 42,724.88 × 16,813.28
  4. Step 4: Simplify right side
    30,960.33x = 718,345,370.41
  5. Step 5: Solve for x
    x = 718,345,370.41/30,960.33
  6. Step 6: Final answer
    x = 23,202.12

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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.