Home / 19,861.20-29,783.70-6,706.80

Finding the Fourth Proportional to 19,861.20, 29,783.70 and 6,706.80

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Solution

The fourth proportional to 19,861.20, 29,783.70 and 6,706.80 is: 10,057.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,861.20 : 29,783.70 = 6,706.80 : x
  2. Step 2: Convert to fraction form
    19,861.20/29,783.70 = 6,706.80/x
  3. Step 3: Cross multiply
    19,861.20x = 29,783.70 × 6,706.80
  4. Step 4: Simplify right side
    19,861.20x = 199,753,319.16
  5. Step 5: Solve for x
    x = 199,753,319.16/19,861.20
  6. Step 6: Final answer
    x = 10,057.46

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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.