Home / 11,121.95-15,346.77-6,644.75

Finding the Fourth Proportional to 11,121.95, 15,346.77 and 6,644.75

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Solution

The fourth proportional to 11,121.95, 15,346.77 and 6,644.75 is: 9,168.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,121.95 : 15,346.77 = 6,644.75 : x
  2. Step 2: Convert to fraction form
    11,121.95/15,346.77 = 6,644.75/x
  3. Step 3: Cross multiply
    11,121.95x = 15,346.77 × 6,644.75
  4. Step 4: Simplify right side
    11,121.95x = 101,975,411.59
  5. Step 5: Solve for x
    x = 101,975,411.59/11,121.95
  6. Step 6: Final answer
    x = 9,168.84

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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.