Home / 11,221.48-16,902.79-10,530.28

Finding the Fourth Proportional to 11,221.48, 16,902.79 and 10,530.28

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Solution

The fourth proportional to 11,221.48, 16,902.79 and 10,530.28 is: 15,861.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.48 : 16,902.79 = 10,530.28 : x
  2. Step 2: Convert to fraction form
    11,221.48/16,902.79 = 10,530.28/x
  3. Step 3: Cross multiply
    11,221.48x = 16,902.79 × 10,530.28
  4. Step 4: Simplify right side
    11,221.48x = 177,991,111.48
  5. Step 5: Solve for x
    x = 177,991,111.48/11,221.48
  6. Step 6: Final answer
    x = 15,861.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.