Home / 20,502.68-28,288.71-11,550.17

Finding the Fourth Proportional to 20,502.68, 28,288.71 and 11,550.17

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Solution

The fourth proportional to 20,502.68, 28,288.71 and 11,550.17 is: 15,936.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,502.68 : 28,288.71 = 11,550.17 : x
  2. Step 2: Convert to fraction form
    20,502.68/28,288.71 = 11,550.17/x
  3. Step 3: Cross multiply
    20,502.68x = 28,288.71 × 11,550.17
  4. Step 4: Simplify right side
    20,502.68x = 326,739,268.14
  5. Step 5: Solve for x
    x = 326,739,268.14/20,502.68
  6. Step 6: Final answer
    x = 15,936.42

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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.