Home / 11,721.12-16,173.60-7,528.56

Finding the Fourth Proportional to 11,721.12, 16,173.60 and 7,528.56

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Solution

The fourth proportional to 11,721.12, 16,173.60 and 7,528.56 is: 10,388.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.12 : 16,173.60 = 7,528.56 : x
  2. Step 2: Convert to fraction form
    11,721.12/16,173.60 = 7,528.56/x
  3. Step 3: Cross multiply
    11,721.12x = 16,173.60 × 7,528.56
  4. Step 4: Simplify right side
    11,721.12x = 121,763,918.02
  5. Step 5: Solve for x
    x = 121,763,918.02/11,721.12
  6. Step 6: Final answer
    x = 10,388.42

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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.