Home / 20,679.40-28,537.06-11,726.92

Finding the Fourth Proportional to 20,679.40, 28,537.06 and 11,726.92

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Solution

The fourth proportional to 20,679.40, 28,537.06 and 11,726.92 is: 16,182.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.40 : 28,537.06 = 11,726.92 : x
  2. Step 2: Convert to fraction form
    20,679.40/28,537.06 = 11,726.92/x
  3. Step 3: Cross multiply
    20,679.40x = 28,537.06 × 11,726.92
  4. Step 4: Simplify right side
    20,679.40x = 334,651,819.66
  5. Step 5: Solve for x
    x = 334,651,819.66/20,679.40
  6. Step 6: Final answer
    x = 16,182.86

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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.