Home / 20,582.24-28,403.53-11,150.80

Finding the Fourth Proportional to 20,582.24, 28,403.53 and 11,150.80

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Solution

The fourth proportional to 20,582.24, 28,403.53 and 11,150.80 is: 15,388.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.24 : 28,403.53 = 11,150.80 : x
  2. Step 2: Convert to fraction form
    20,582.24/28,403.53 = 11,150.80/x
  3. Step 3: Cross multiply
    20,582.24x = 28,403.53 × 11,150.80
  4. Step 4: Simplify right side
    20,582.24x = 316,721,983.44
  5. Step 5: Solve for x
    x = 316,721,983.44/20,582.24
  6. Step 6: Final answer
    x = 15,388.12

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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.