Home / 18,187.49-27,280.99-9,920.17

Finding the Fourth Proportional to 18,187.49, 27,280.99 and 9,920.17

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Solution

The fourth proportional to 18,187.49, 27,280.99 and 9,920.17 is: 14,880.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,187.49 : 27,280.99 = 9,920.17 : x
  2. Step 2: Convert to fraction form
    18,187.49/27,280.99 = 9,920.17/x
  3. Step 3: Cross multiply
    18,187.49x = 27,280.99 × 9,920.17
  4. Step 4: Simplify right side
    18,187.49x = 270,632,058.57
  5. Step 5: Solve for x
    x = 270,632,058.57/18,187.49
  6. Step 6: Final answer
    x = 14,880.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.