Home / 20,774.70-28,669.07-11,343.27

Finding the Fourth Proportional to 20,774.70, 28,669.07 and 11,343.27

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Solution

The fourth proportional to 20,774.70, 28,669.07 and 11,343.27 is: 15,653.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.70 : 28,669.07 = 11,343.27 : x
  2. Step 2: Convert to fraction form
    20,774.70/28,669.07 = 11,343.27/x
  3. Step 3: Cross multiply
    20,774.70x = 28,669.07 × 11,343.27
  4. Step 4: Simplify right side
    20,774.70x = 325,201,001.66
  5. Step 5: Solve for x
    x = 325,201,001.66/20,774.70
  6. Step 6: Final answer
    x = 15,653.70

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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.