Home / 18,117.51-27,156.31-13,660.88

Finding the Fourth Proportional to 18,117.51, 27,156.31 and 13,660.88

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Solution

The fourth proportional to 18,117.51, 27,156.31 and 13,660.88 is: 20,476.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.51 : 27,156.31 = 13,660.88 : x
  2. Step 2: Convert to fraction form
    18,117.51/27,156.31 = 13,660.88/x
  3. Step 3: Cross multiply
    18,117.51x = 27,156.31 × 13,660.88
  4. Step 4: Simplify right side
    18,117.51x = 370,979,092.15
  5. Step 5: Solve for x
    x = 370,979,092.15/18,117.51
  6. Step 6: Final answer
    x = 20,476.27

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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.