Home / 11,106.28-15,320.60-7,122.96

Finding the Fourth Proportional to 11,106.28, 15,320.60 and 7,122.96

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Solution

The fourth proportional to 11,106.28, 15,320.60 and 7,122.96 is: 9,825.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,106.28 : 15,320.60 = 7,122.96 : x
  2. Step 2: Convert to fraction form
    11,106.28/15,320.60 = 7,122.96/x
  3. Step 3: Cross multiply
    11,106.28x = 15,320.60 × 7,122.96
  4. Step 4: Simplify right side
    11,106.28x = 109,128,020.98
  5. Step 5: Solve for x
    x = 109,128,020.98/11,106.28
  6. Step 6: Final answer
    x = 9,825.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.