Home / 31,621.15-43,657.53-20,295.53

Finding the Fourth Proportional to 31,621.15, 43,657.53 and 20,295.53

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Solution

The fourth proportional to 31,621.15, 43,657.53 and 20,295.53 is: 28,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,621.15 : 43,657.53 = 20,295.53 : x
  2. Step 2: Convert to fraction form
    31,621.15/43,657.53 = 20,295.53/x
  3. Step 3: Cross multiply
    31,621.15x = 43,657.53 × 20,295.53
  4. Step 4: Simplify right side
    31,621.15x = 886,052,709.84
  5. Step 5: Solve for x
    x = 886,052,709.84/31,621.15
  6. Step 6: Final answer
    x = 28,020.89

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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.