Home / 20,224.70-30,337.05-12,861.80

Finding the Fourth Proportional to 20,224.70, 30,337.05 and 12,861.80

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Solution

The fourth proportional to 20,224.70, 30,337.05 and 12,861.80 is: 19,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.70 : 30,337.05 = 12,861.80 : x
  2. Step 2: Convert to fraction form
    20,224.70/30,337.05 = 12,861.80/x
  3. Step 3: Cross multiply
    20,224.70x = 30,337.05 × 12,861.80
  4. Step 4: Simplify right side
    20,224.70x = 390,189,069.69
  5. Step 5: Solve for x
    x = 390,189,069.69/20,224.70
  6. Step 6: Final answer
    x = 19,292.70

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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.