Home / 20,155.08-27,806.64-12,194.40

Finding the Fourth Proportional to 20,155.08, 27,806.64 and 12,194.40

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Solution

The fourth proportional to 20,155.08, 27,806.64 and 12,194.40 is: 16,823.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,155.08 : 27,806.64 = 12,194.40 : x
  2. Step 2: Convert to fraction form
    20,155.08/27,806.64 = 12,194.40/x
  3. Step 3: Cross multiply
    20,155.08x = 27,806.64 × 12,194.40
  4. Step 4: Simplify right side
    20,155.08x = 339,085,290.82
  5. Step 5: Solve for x
    x = 339,085,290.82/20,155.08
  6. Step 6: Final answer
    x = 16,823.81

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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.