Home / 10,861.60-16,270.80-6,239.20

Finding the Fourth Proportional to 10,861.60, 16,270.80 and 6,239.20

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Solution

The fourth proportional to 10,861.60, 16,270.80 and 6,239.20 is: 9,346.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,861.60 : 16,270.80 = 6,239.20 : x
  2. Step 2: Convert to fraction form
    10,861.60/16,270.80 = 6,239.20/x
  3. Step 3: Cross multiply
    10,861.60x = 16,270.80 × 6,239.20
  4. Step 4: Simplify right side
    10,861.60x = 101,516,775.36
  5. Step 5: Solve for x
    x = 101,516,775.36/10,861.60
  6. Step 6: Final answer
    x = 9,346.39

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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.