Home / 20,680.98-28,541.24-11,729.26

Finding the Fourth Proportional to 20,680.98, 28,541.24 and 11,729.26

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Solution

The fourth proportional to 20,680.98, 28,541.24 and 11,729.26 is: 16,187.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.98 : 28,541.24 = 11,729.26 : x
  2. Step 2: Convert to fraction form
    20,680.98/28,541.24 = 11,729.26/x
  3. Step 3: Cross multiply
    20,680.98x = 28,541.24 × 11,729.26
  4. Step 4: Simplify right side
    20,680.98x = 334,767,624.68
  5. Step 5: Solve for x
    x = 334,767,624.68/20,680.98
  6. Step 6: Final answer
    x = 16,187.22

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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.