Home / 20,582.10-28,403.37-11,150.64

Finding the Fourth Proportional to 20,582.10, 28,403.37 and 11,150.64

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Solution

The fourth proportional to 20,582.10, 28,403.37 and 11,150.64 is: 15,387.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.10 : 28,403.37 = 11,150.64 : x
  2. Step 2: Convert to fraction form
    20,582.10/28,403.37 = 11,150.64/x
  3. Step 3: Cross multiply
    20,582.10x = 28,403.37 × 11,150.64
  4. Step 4: Simplify right side
    20,582.10x = 316,715,753.66
  5. Step 5: Solve for x
    x = 316,715,753.66/20,582.10
  6. Step 6: Final answer
    x = 15,387.92

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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.