Home / 20,346.09-28,074.33-11,393.97

Finding the Fourth Proportional to 20,346.09, 28,074.33 and 11,393.97

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Solution

The fourth proportional to 20,346.09, 28,074.33 and 11,393.97 is: 15,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.09 : 28,074.33 = 11,393.97 : x
  2. Step 2: Convert to fraction form
    20,346.09/28,074.33 = 11,393.97/x
  3. Step 3: Cross multiply
    20,346.09x = 28,074.33 × 11,393.97
  4. Step 4: Simplify right side
    20,346.09x = 319,878,073.79
  5. Step 5: Solve for x
    x = 319,878,073.79/20,346.09
  6. Step 6: Final answer
    x = 15,721.85

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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.