Home / 20,758.08-28,646.78-11,806.87

Finding the Fourth Proportional to 20,758.08, 28,646.78 and 11,806.87

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Solution

The fourth proportional to 20,758.08, 28,646.78 and 11,806.87 is: 16,293.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.08 : 28,646.78 = 11,806.87 : x
  2. Step 2: Convert to fraction form
    20,758.08/28,646.78 = 11,806.87/x
  3. Step 3: Cross multiply
    20,758.08x = 28,646.78 × 11,806.87
  4. Step 4: Simplify right side
    20,758.08x = 338,228,807.38
  5. Step 5: Solve for x
    x = 338,228,807.38/20,758.08
  6. Step 6: Final answer
    x = 16,293.84

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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.