Home / 18,115.51-27,153.31-13,658.88

Finding the Fourth Proportional to 18,115.51, 27,153.31 and 13,658.88

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Solution

The fourth proportional to 18,115.51, 27,153.31 and 13,658.88 is: 20,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.51 : 27,153.31 = 13,658.88 : x
  2. Step 2: Convert to fraction form
    18,115.51/27,153.31 = 13,658.88/x
  3. Step 3: Cross multiply
    18,115.51x = 27,153.31 × 13,658.88
  4. Step 4: Simplify right side
    18,115.51x = 370,883,948.06
  5. Step 5: Solve for x
    x = 370,883,948.06/18,115.51
  6. Step 6: Final answer
    x = 20,473.28

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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.