Home / 20,706.08-28,579.56-11,758.88

Finding the Fourth Proportional to 20,706.08, 28,579.56 and 11,758.88

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Solution

The fourth proportional to 20,706.08, 28,579.56 and 11,758.88 is: 16,230.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,706.08 : 28,579.56 = 11,758.88 : x
  2. Step 2: Convert to fraction form
    20,706.08/28,579.56 = 11,758.88/x
  3. Step 3: Cross multiply
    20,706.08x = 28,579.56 × 11,758.88
  4. Step 4: Simplify right side
    20,706.08x = 336,063,616.49
  5. Step 5: Solve for x
    x = 336,063,616.49/20,706.08
  6. Step 6: Final answer
    x = 16,230.19

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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.