Home / 20,679.59-28,537.41-11,727.17

Finding the Fourth Proportional to 20,679.59, 28,537.41 and 11,727.17

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Solution

The fourth proportional to 20,679.59, 28,537.41 and 11,727.17 is: 16,183.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,679.59 : 28,537.41 = 11,727.17 : x
  2. Step 2: Convert to fraction form
    20,679.59/28,537.41 = 11,727.17/x
  3. Step 3: Cross multiply
    20,679.59x = 28,537.41 × 11,727.17
  4. Step 4: Simplify right side
    20,679.59x = 334,662,915.74
  5. Step 5: Solve for x
    x = 334,662,915.74/20,679.59
  6. Step 6: Final answer
    x = 16,183.25

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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.