Home / 20,088-27,721.44-11,135.34

Finding the Fourth Proportional to 20,088, 27,721.44 and 11,135.34

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Solution

The fourth proportional to 20,088, 27,721.44 and 11,135.34 is: 15,366.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,088 : 27,721.44 = 11,135.34 : x
  2. Step 2: Convert to fraction form
    20,088/27,721.44 = 11,135.34/x
  3. Step 3: Cross multiply
    20,088x = 27,721.44 × 11,135.34
  4. Step 4: Simplify right side
    20,088x = 308,687,659.69
  5. Step 5: Solve for x
    x = 308,687,659.69/20,088
  6. Step 6: Final answer
    x = 15,366.77

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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.