Home / 20,391.35-30,586.64-5,599.71

Finding the Fourth Proportional to 20,391.35, 30,586.64 and 5,599.71

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Solution

The fourth proportional to 20,391.35, 30,586.64 and 5,599.71 is: 8,399.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.35 : 30,586.64 = 5,599.71 : x
  2. Step 2: Convert to fraction form
    20,391.35/30,586.64 = 5,599.71/x
  3. Step 3: Cross multiply
    20,391.35x = 30,586.64 × 5,599.71
  4. Step 4: Simplify right side
    20,391.35x = 171,276,285.88
  5. Step 5: Solve for x
    x = 171,276,285.88/20,391.35
  6. Step 6: Final answer
    x = 8,399.46

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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.