Home / 11,278.40-16,917.60-10,164.80

Finding the Fourth Proportional to 11,278.40, 16,917.60 and 10,164.80

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Solution

The fourth proportional to 11,278.40, 16,917.60 and 10,164.80 is: 15,247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,278.40 : 16,917.60 = 10,164.80 : x
  2. Step 2: Convert to fraction form
    11,278.40/16,917.60 = 10,164.80/x
  3. Step 3: Cross multiply
    11,278.40x = 16,917.60 × 10,164.80
  4. Step 4: Simplify right side
    11,278.40x = 171,964,020.48
  5. Step 5: Solve for x
    x = 171,964,020.48/11,278.40
  6. Step 6: Final answer
    x = 15,247.20

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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.