Home / 20,775.48-28,660.19-15,101.43

Finding the Fourth Proportional to 20,775.48, 28,660.19 and 15,101.43

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Solution

The fourth proportional to 20,775.48, 28,660.19 and 15,101.43 is: 20,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,775.48 : 28,660.19 = 15,101.43 : x
  2. Step 2: Convert to fraction form
    20,775.48/28,660.19 = 15,101.43/x
  3. Step 3: Cross multiply
    20,775.48x = 28,660.19 × 15,101.43
  4. Step 4: Simplify right side
    20,775.48x = 432,809,853.07
  5. Step 5: Solve for x
    x = 432,809,853.07/20,775.48
  6. Step 6: Final answer
    x = 20,832.72

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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.