Home / 20,784.13-28,682.24-11,352.69

Finding the Fourth Proportional to 20,784.13, 28,682.24 and 11,352.69

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Solution

The fourth proportional to 20,784.13, 28,682.24 and 11,352.69 is: 15,666.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784.13 : 28,682.24 = 11,352.69 : x
  2. Step 2: Convert to fraction form
    20,784.13/28,682.24 = 11,352.69/x
  3. Step 3: Cross multiply
    20,784.13x = 28,682.24 × 11,352.69
  4. Step 4: Simplify right side
    20,784.13x = 325,620,579.23
  5. Step 5: Solve for x
    x = 325,620,579.23/20,784.13
  6. Step 6: Final answer
    x = 15,666.79

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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.