Home / 20,077.88-27,707.45-11,125.31

Finding the Fourth Proportional to 20,077.88, 27,707.45 and 11,125.31

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Solution

The fourth proportional to 20,077.88, 27,707.45 and 11,125.31 is: 15,352.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.88 : 27,707.45 = 11,125.31 : x
  2. Step 2: Convert to fraction form
    20,077.88/27,707.45 = 11,125.31/x
  3. Step 3: Cross multiply
    20,077.88x = 27,707.45 × 11,125.31
  4. Step 4: Simplify right side
    20,077.88x = 308,253,776.40
  5. Step 5: Solve for x
    x = 308,253,776.40/20,077.88
  6. Step 6: Final answer
    x = 15,352.91

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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.