Home / 12,572.89-18,861.37-4,253.40

Finding the Fourth Proportional to 12,572.89, 18,861.37 and 4,253.40

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Solution

The fourth proportional to 12,572.89, 18,861.37 and 4,253.40 is: 6,380.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,572.89 : 18,861.37 = 4,253.40 : x
  2. Step 2: Convert to fraction form
    12,572.89/18,861.37 = 4,253.40/x
  3. Step 3: Cross multiply
    12,572.89x = 18,861.37 × 4,253.40
  4. Step 4: Simplify right side
    12,572.89x = 80,224,940.52
  5. Step 5: Solve for x
    x = 80,224,940.52/12,572.89
  6. Step 6: Final answer
    x = 6,380.79

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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.