Home / 40,805.20-61,204.20-11,220.40

Finding the Fourth Proportional to 40,805.20, 61,204.20 and 11,220.40

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Solution

The fourth proportional to 40,805.20, 61,204.20 and 11,220.40 is: 16,829.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,805.20 : 61,204.20 = 11,220.40 : x
  2. Step 2: Convert to fraction form
    40,805.20/61,204.20 = 11,220.40/x
  3. Step 3: Cross multiply
    40,805.20x = 61,204.20 × 11,220.40
  4. Step 4: Simplify right side
    40,805.20x = 686,735,605.68
  5. Step 5: Solve for x
    x = 686,735,605.68/40,805.20
  6. Step 6: Final answer
    x = 16,829.61

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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.