Home / 20,321.23-30,472.13-8,628.07

Finding the Fourth Proportional to 20,321.23, 30,472.13 and 8,628.07

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Solution

The fourth proportional to 20,321.23, 30,472.13 and 8,628.07 is: 12,937.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.23 : 30,472.13 = 8,628.07 : x
  2. Step 2: Convert to fraction form
    20,321.23/30,472.13 = 8,628.07/x
  3. Step 3: Cross multiply
    20,321.23x = 30,472.13 × 8,628.07
  4. Step 4: Simplify right side
    20,321.23x = 262,915,627.55
  5. Step 5: Solve for x
    x = 262,915,627.55/20,321.23
  6. Step 6: Final answer
    x = 12,937.98

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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.