Home / 20,558.56-30,845.40-10,691.68

Finding the Fourth Proportional to 20,558.56, 30,845.40 and 10,691.68

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Solution

The fourth proportional to 20,558.56, 30,845.40 and 10,691.68 is: 16,041.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,558.56 : 30,845.40 = 10,691.68 : x
  2. Step 2: Convert to fraction form
    20,558.56/30,845.40 = 10,691.68/x
  3. Step 3: Cross multiply
    20,558.56x = 30,845.40 × 10,691.68
  4. Step 4: Simplify right side
    20,558.56x = 329,789,146.27
  5. Step 5: Solve for x
    x = 329,789,146.27/20,558.56
  6. Step 6: Final answer
    x = 16,041.45

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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.