Home / 20,319.46-28,040.68-11,367.03

Finding the Fourth Proportional to 20,319.46, 28,040.68 and 11,367.03

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Solution

The fourth proportional to 20,319.46, 28,040.68 and 11,367.03 is: 15,686.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.46 : 28,040.68 = 11,367.03 : x
  2. Step 2: Convert to fraction form
    20,319.46/28,040.68 = 11,367.03/x
  3. Step 3: Cross multiply
    20,319.46x = 28,040.68 × 11,367.03
  4. Step 4: Simplify right side
    20,319.46x = 318,739,370.14
  5. Step 5: Solve for x
    x = 318,739,370.14/20,319.46
  6. Step 6: Final answer
    x = 15,686.41

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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.