Home / 39,621.87-59,469.78-20,915.73

Finding the Fourth Proportional to 39,621.87, 59,469.78 and 20,915.73

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Solution

The fourth proportional to 39,621.87, 59,469.78 and 20,915.73 is: 31,393.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,621.87 : 59,469.78 = 20,915.73 : x
  2. Step 2: Convert to fraction form
    39,621.87/59,469.78 = 20,915.73/x
  3. Step 3: Cross multiply
    39,621.87x = 59,469.78 × 20,915.73
  4. Step 4: Simplify right side
    39,621.87x = 1,243,853,861.64
  5. Step 5: Solve for x
    x = 1,243,853,861.64/39,621.87
  6. Step 6: Final answer
    x = 31,393.11

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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.