Home / 20,244.48-27,938.88-12,288.96

Finding the Fourth Proportional to 20,244.48, 27,938.88 and 12,288.96

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Solution

The fourth proportional to 20,244.48, 27,938.88 and 12,288.96 is: 16,959.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,244.48 : 27,938.88 = 12,288.96 : x
  2. Step 2: Convert to fraction form
    20,244.48/27,938.88 = 12,288.96/x
  3. Step 3: Cross multiply
    20,244.48x = 27,938.88 × 12,288.96
  4. Step 4: Simplify right side
    20,244.48x = 343,339,778.76
  5. Step 5: Solve for x
    x = 343,339,778.76/20,244.48
  6. Step 6: Final answer
    x = 16,959.67

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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.