Home / 31,270.05-43,149.93-18,520.98

Finding the Fourth Proportional to 31,270.05, 43,149.93 and 18,520.98

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Solution

The fourth proportional to 31,270.05, 43,149.93 and 18,520.98 is: 25,557.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,270.05 : 43,149.93 = 18,520.98 : x
  2. Step 2: Convert to fraction form
    31,270.05/43,149.93 = 18,520.98/x
  3. Step 3: Cross multiply
    31,270.05x = 43,149.93 × 18,520.98
  4. Step 4: Simplify right side
    31,270.05x = 799,178,990.53
  5. Step 5: Solve for x
    x = 799,178,990.53/31,270.05
  6. Step 6: Final answer
    x = 25,557.33

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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.