Home / 20,917.09-31,333.97-15,306.58

Finding the Fourth Proportional to 20,917.09, 31,333.97 and 15,306.58

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Solution

The fourth proportional to 20,917.09, 31,333.97 and 15,306.58 is: 22,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,917.09 : 31,333.97 = 15,306.58 : x
  2. Step 2: Convert to fraction form
    20,917.09/31,333.97 = 15,306.58/x
  3. Step 3: Cross multiply
    20,917.09x = 31,333.97 × 15,306.58
  4. Step 4: Simplify right side
    20,917.09x = 479,615,685.32
  5. Step 5: Solve for x
    x = 479,615,685.32/20,917.09
  6. Step 6: Final answer
    x = 22,929.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.