Home / 20,678.46-28,536.91-11,726.34

Finding the Fourth Proportional to 20,678.46, 28,536.91 and 11,726.34

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Solution

The fourth proportional to 20,678.46, 28,536.91 and 11,726.34 is: 16,182.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,678.46 : 28,536.91 = 11,726.34 : x
  2. Step 2: Convert to fraction form
    20,678.46/28,536.91 = 11,726.34/x
  3. Step 3: Cross multiply
    20,678.46x = 28,536.91 × 11,726.34
  4. Step 4: Simplify right side
    20,678.46x = 334,633,372.88
  5. Step 5: Solve for x
    x = 334,633,372.88/20,678.46
  6. Step 6: Final answer
    x = 16,182.71

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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.