Home / 20,536.91-28,340.42-11,583.71

Finding the Fourth Proportional to 20,536.91, 28,340.42 and 11,583.71

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Solution

The fourth proportional to 20,536.91, 28,340.42 and 11,583.71 is: 15,985.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.91 : 28,340.42 = 11,583.71 : x
  2. Step 2: Convert to fraction form
    20,536.91/28,340.42 = 11,583.71/x
  3. Step 3: Cross multiply
    20,536.91x = 28,340.42 × 11,583.71
  4. Step 4: Simplify right side
    20,536.91x = 328,287,206.56
  5. Step 5: Solve for x
    x = 328,287,206.56/20,536.91
  6. Step 6: Final answer
    x = 15,985.23

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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.