Home / 11,195.20-15,448.08-7,663.60

Finding the Fourth Proportional to 11,195.20, 15,448.08 and 7,663.60

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Solution

The fourth proportional to 11,195.20, 15,448.08 and 7,663.60 is: 10,574.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,195.20 : 15,448.08 = 7,663.60 : x
  2. Step 2: Convert to fraction form
    11,195.20/15,448.08 = 7,663.60/x
  3. Step 3: Cross multiply
    11,195.20x = 15,448.08 × 7,663.60
  4. Step 4: Simplify right side
    11,195.20x = 118,387,905.89
  5. Step 5: Solve for x
    x = 118,387,905.89/11,195.20
  6. Step 6: Final answer
    x = 10,574.88

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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.