Home / 20,678.39-28,536.82-11,726.27

Finding the Fourth Proportional to 20,678.39, 28,536.82 and 11,726.27

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Solution

The fourth proportional to 20,678.39, 28,536.82 and 11,726.27 is: 16,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.39 : 28,536.82 = 11,726.27 : x
  2. Step 2: Convert to fraction form
    20,678.39/28,536.82 = 11,726.27/x
  3. Step 3: Cross multiply
    20,678.39x = 28,536.82 × 11,726.27
  4. Step 4: Simplify right side
    20,678.39x = 334,630,456.26
  5. Step 5: Solve for x
    x = 334,630,456.26/20,678.39
  6. Step 6: Final answer
    x = 16,182.62

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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.