Home / 20,719.40-28,595.22-11,769.68

Finding the Fourth Proportional to 20,719.40, 28,595.22 and 11,769.68

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Solution

The fourth proportional to 20,719.40, 28,595.22 and 11,769.68 is: 16,243.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,719.40 : 28,595.22 = 11,769.68 : x
  2. Step 2: Convert to fraction form
    20,719.40/28,595.22 = 11,769.68/x
  3. Step 3: Cross multiply
    20,719.40x = 28,595.22 × 11,769.68
  4. Step 4: Simplify right side
    20,719.40x = 336,556,588.93
  5. Step 5: Solve for x
    x = 336,556,588.93/20,719.40
  6. Step 6: Final answer
    x = 16,243.55

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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.