Home / 40,900.88-61,349.57-12,820.31

Finding the Fourth Proportional to 40,900.88, 61,349.57 and 12,820.31

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Solution

The fourth proportional to 40,900.88, 61,349.57 and 12,820.31 is: 19,229.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,900.88 : 61,349.57 = 12,820.31 : x
  2. Step 2: Convert to fraction form
    40,900.88/61,349.57 = 12,820.31/x
  3. Step 3: Cross multiply
    40,900.88x = 61,349.57 × 12,820.31
  4. Step 4: Simplify right side
    40,900.88x = 786,520,413.05
  5. Step 5: Solve for x
    x = 786,520,413.05/40,900.88
  6. Step 6: Final answer
    x = 19,229.91

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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.