Home / 11,225.60-16,838.40-10,380.80

Finding the Fourth Proportional to 11,225.60, 16,838.40 and 10,380.80

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Solution

The fourth proportional to 11,225.60, 16,838.40 and 10,380.80 is: 15,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,225.60 : 16,838.40 = 10,380.80 : x
  2. Step 2: Convert to fraction form
    11,225.60/16,838.40 = 10,380.80/x
  3. Step 3: Cross multiply
    11,225.60x = 16,838.40 × 10,380.80
  4. Step 4: Simplify right side
    11,225.60x = 174,796,062.72
  5. Step 5: Solve for x
    x = 174,796,062.72/11,225.60
  6. Step 6: Final answer
    x = 15,571.20

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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.