Home / 18,078.24-27,117.38-11,877.40

Finding the Fourth Proportional to 18,078.24, 27,117.38 and 11,877.40

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Solution

The fourth proportional to 18,078.24, 27,117.38 and 11,877.40 is: 17,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,078.24 : 27,117.38 = 11,877.40 : x
  2. Step 2: Convert to fraction form
    18,078.24/27,117.38 = 11,877.40/x
  3. Step 3: Cross multiply
    18,078.24x = 27,117.38 × 11,877.40
  4. Step 4: Simplify right side
    18,078.24x = 322,083,969.21
  5. Step 5: Solve for x
    x = 322,083,969.21/18,078.24
  6. Step 6: Final answer
    x = 17,816.11

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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.