Home / 55,439.21-83,191.62-20,403.47

Finding the Fourth Proportional to 55,439.21, 83,191.62 and 20,403.47

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Solution

The fourth proportional to 55,439.21, 83,191.62 and 20,403.47 is: 30,617.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,439.21 : 83,191.62 = 20,403.47 : x
  2. Step 2: Convert to fraction form
    55,439.21/83,191.62 = 20,403.47/x
  3. Step 3: Cross multiply
    55,439.21x = 83,191.62 × 20,403.47
  4. Step 4: Simplify right side
    55,439.21x = 1,697,397,306.96
  5. Step 5: Solve for x
    x = 1,697,397,306.96/55,439.21
  6. Step 6: Final answer
    x = 30,617.27

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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.