Home / 11,123.20-16,665.60-7,225.60

Finding the Fourth Proportional to 11,123.20, 16,665.60 and 7,225.60

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Solution

The fourth proportional to 11,123.20, 16,665.60 and 7,225.60 is: 10,825.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,123.20 : 16,665.60 = 7,225.60 : x
  2. Step 2: Convert to fraction form
    11,123.20/16,665.60 = 7,225.60/x
  3. Step 3: Cross multiply
    11,123.20x = 16,665.60 × 7,225.60
  4. Step 4: Simplify right side
    11,123.20x = 120,418,959.36
  5. Step 5: Solve for x
    x = 120,418,959.36/11,123.20
  6. Step 6: Final answer
    x = 10,825.93

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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.