Home / 20,873.28-28,799.36-11,917.52

Finding the Fourth Proportional to 20,873.28, 28,799.36 and 11,917.52

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Solution

The fourth proportional to 20,873.28, 28,799.36 and 11,917.52 is: 16,442.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.28 : 28,799.36 = 11,917.52 : x
  2. Step 2: Convert to fraction form
    20,873.28/28,799.36 = 11,917.52/x
  3. Step 3: Cross multiply
    20,873.28x = 28,799.36 × 11,917.52
  4. Step 4: Simplify right side
    20,873.28x = 343,216,948.79
  5. Step 5: Solve for x
    x = 343,216,948.79/20,873.28
  6. Step 6: Final answer
    x = 16,442.89

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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.