Home / 18,142.29-27,155.12-13,619.25

Finding the Fourth Proportional to 18,142.29, 27,155.12 and 13,619.25

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Solution

The fourth proportional to 18,142.29, 27,155.12 and 13,619.25 is: 20,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142.29 : 27,155.12 = 13,619.25 : x
  2. Step 2: Convert to fraction form
    18,142.29/27,155.12 = 13,619.25/x
  3. Step 3: Cross multiply
    18,142.29x = 27,155.12 × 13,619.25
  4. Step 4: Simplify right side
    18,142.29x = 369,832,299.96
  5. Step 5: Solve for x
    x = 369,832,299.96/18,142.29
  6. Step 6: Final answer
    x = 20,385.09

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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.