Home / 20,774.86-28,669.34-11,343.43

Finding the Fourth Proportional to 20,774.86, 28,669.34 and 11,343.43

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Solution

The fourth proportional to 20,774.86, 28,669.34 and 11,343.43 is: 15,653.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.86 : 28,669.34 = 11,343.43 : x
  2. Step 2: Convert to fraction form
    20,774.86/28,669.34 = 11,343.43/x
  3. Step 3: Cross multiply
    20,774.86x = 28,669.34 × 11,343.43
  4. Step 4: Simplify right side
    20,774.86x = 325,208,554.37
  5. Step 5: Solve for x
    x = 325,208,554.37/20,774.86
  6. Step 6: Final answer
    x = 15,653.94

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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.