Home / 20,060.88-27,662.40-13,688.16

Finding the Fourth Proportional to 20,060.88, 27,662.40 and 13,688.16

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Solution

The fourth proportional to 20,060.88, 27,662.40 and 13,688.16 is: 18,874.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,060.88 : 27,662.40 = 13,688.16 : x
  2. Step 2: Convert to fraction form
    20,060.88/27,662.40 = 13,688.16/x
  3. Step 3: Cross multiply
    20,060.88x = 27,662.40 × 13,688.16
  4. Step 4: Simplify right side
    20,060.88x = 378,647,357.18
  5. Step 5: Solve for x
    x = 378,647,357.18/20,060.88
  6. Step 6: Final answer
    x = 18,874.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.