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Finding the Fourth Proportional to 20,203.68, 27,889.68 and 13,583.52

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Solution

The fourth proportional to 20,203.68, 27,889.68 and 13,583.52 is: 18,751.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.68 : 27,889.68 = 13,583.52 : x
  2. Step 2: Convert to fraction form
    20,203.68/27,889.68 = 13,583.52/x
  3. Step 3: Cross multiply
    20,203.68x = 27,889.68 × 13,583.52
  4. Step 4: Simplify right side
    20,203.68x = 378,840,026.07
  5. Step 5: Solve for x
    x = 378,840,026.07/20,203.68
  6. Step 6: Final answer
    x = 18,751.04

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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.