Home / 20,582.96-28,404.60-11,151.68

Finding the Fourth Proportional to 20,582.96, 28,404.60 and 11,151.68

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Solution

The fourth proportional to 20,582.96, 28,404.60 and 11,151.68 is: 15,389.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,582.96 : 28,404.60 = 11,151.68 : x
  2. Step 2: Convert to fraction form
    20,582.96/28,404.60 = 11,151.68/x
  3. Step 3: Cross multiply
    20,582.96x = 28,404.60 × 11,151.68
  4. Step 4: Simplify right side
    20,582.96x = 316,759,009.73
  5. Step 5: Solve for x
    x = 316,759,009.73/20,582.96
  6. Step 6: Final answer
    x = 15,389.38

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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.