Home / 11,145.04-15,380.08-6,109.48

Finding the Fourth Proportional to 11,145.04, 15,380.08 and 6,109.48

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Solution

The fourth proportional to 11,145.04, 15,380.08 and 6,109.48 is: 8,431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,145.04 : 15,380.08 = 6,109.48 : x
  2. Step 2: Convert to fraction form
    11,145.04/15,380.08 = 6,109.48/x
  3. Step 3: Cross multiply
    11,145.04x = 15,380.08 × 6,109.48
  4. Step 4: Simplify right side
    11,145.04x = 93,964,208.60
  5. Step 5: Solve for x
    x = 93,964,208.60/11,145.04
  6. Step 6: Final answer
    x = 8,431.03

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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.