Home / 20,615.66-28,449.68-11,184.30

Finding the Fourth Proportional to 20,615.66, 28,449.68 and 11,184.30

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Solution

The fourth proportional to 20,615.66, 28,449.68 and 11,184.30 is: 15,434.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,615.66 : 28,449.68 = 11,184.30 : x
  2. Step 2: Convert to fraction form
    20,615.66/28,449.68 = 11,184.30/x
  3. Step 3: Cross multiply
    20,615.66x = 28,449.68 × 11,184.30
  4. Step 4: Simplify right side
    20,615.66x = 318,189,756.02
  5. Step 5: Solve for x
    x = 318,189,756.02/20,615.66
  6. Step 6: Final answer
    x = 15,434.37

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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.