Home / 42,816.96-64,198.04-20,586.06

Finding the Fourth Proportional to 42,816.96, 64,198.04 and 20,586.06

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Solution

The fourth proportional to 42,816.96, 64,198.04 and 20,586.06 is: 30,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,816.96 : 64,198.04 = 20,586.06 : x
  2. Step 2: Convert to fraction form
    42,816.96/64,198.04 = 20,586.06/x
  3. Step 3: Cross multiply
    42,816.96x = 64,198.04 × 20,586.06
  4. Step 4: Simplify right side
    42,816.96x = 1,321,584,600.39
  5. Step 5: Solve for x
    x = 1,321,584,600.39/42,816.96
  6. Step 6: Final answer
    x = 30,865.91

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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.