Home / 10,824.40-16,204.20-6,439.60

Finding the Fourth Proportional to 10,824.40, 16,204.20 and 6,439.60

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Solution

The fourth proportional to 10,824.40, 16,204.20 and 6,439.60 is: 9,640.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,824.40 : 16,204.20 = 6,439.60 : x
  2. Step 2: Convert to fraction form
    10,824.40/16,204.20 = 6,439.60/x
  3. Step 3: Cross multiply
    10,824.40x = 16,204.20 × 6,439.60
  4. Step 4: Simplify right side
    10,824.40x = 104,348,566.32
  5. Step 5: Solve for x
    x = 104,348,566.32/10,824.40
  6. Step 6: Final answer
    x = 9,640.12

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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.