Home / 20,641.11-28,496.54-13,588.03

Finding the Fourth Proportional to 20,641.11, 28,496.54 and 13,588.03

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Solution

The fourth proportional to 20,641.11, 28,496.54 and 13,588.03 is: 18,759.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,641.11 : 28,496.54 = 13,588.03 : x
  2. Step 2: Convert to fraction form
    20,641.11/28,496.54 = 13,588.03/x
  3. Step 3: Cross multiply
    20,641.11x = 28,496.54 × 13,588.03
  4. Step 4: Simplify right side
    20,641.11x = 387,211,833.57
  5. Step 5: Solve for x
    x = 387,211,833.57/20,641.11
  6. Step 6: Final answer
    x = 18,759.26

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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.