Home / 20,633.57-28,474.98-11,680.91

Finding the Fourth Proportional to 20,633.57, 28,474.98 and 11,680.91

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Solution

The fourth proportional to 20,633.57, 28,474.98 and 11,680.91 is: 16,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,633.57 : 28,474.98 = 11,680.91 : x
  2. Step 2: Convert to fraction form
    20,633.57/28,474.98 = 11,680.91/x
  3. Step 3: Cross multiply
    20,633.57x = 28,474.98 × 11,680.91
  4. Step 4: Simplify right side
    20,633.57x = 332,613,678.63
  5. Step 5: Solve for x
    x = 332,613,678.63/20,633.57
  6. Step 6: Final answer
    x = 16,120.03

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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.