Home / 11,153.20-16,740.60-5,612.80

Finding the Fourth Proportional to 11,153.20, 16,740.60 and 5,612.80

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Solution

The fourth proportional to 11,153.20, 16,740.60 and 5,612.80 is: 8,424.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.20 : 16,740.60 = 5,612.80 : x
  2. Step 2: Convert to fraction form
    11,153.20/16,740.60 = 5,612.80/x
  3. Step 3: Cross multiply
    11,153.20x = 16,740.60 × 5,612.80
  4. Step 4: Simplify right side
    11,153.20x = 93,961,639.68
  5. Step 5: Solve for x
    x = 93,961,639.68/11,153.20
  6. Step 6: Final answer
    x = 8,424.64

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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.