Home / 20,741.06-28,625.12-11,789.91

Finding the Fourth Proportional to 20,741.06, 28,625.12 and 11,789.91

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Solution

The fourth proportional to 20,741.06, 28,625.12 and 11,789.91 is: 16,271.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.06 : 28,625.12 = 11,789.91 : x
  2. Step 2: Convert to fraction form
    20,741.06/28,625.12 = 11,789.91/x
  3. Step 3: Cross multiply
    20,741.06x = 28,625.12 × 11,789.91
  4. Step 4: Simplify right side
    20,741.06x = 337,487,536.52
  5. Step 5: Solve for x
    x = 337,487,536.52/20,741.06
  6. Step 6: Final answer
    x = 16,271.47

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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.