Home / 20,346.54-28,079.19-11,392.26

Finding the Fourth Proportional to 20,346.54, 28,079.19 and 11,392.26

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Solution

The fourth proportional to 20,346.54, 28,079.19 and 11,392.26 is: 15,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,346.54 : 28,079.19 = 11,392.26 : x
  2. Step 2: Convert to fraction form
    20,346.54/28,079.19 = 11,392.26/x
  3. Step 3: Cross multiply
    20,346.54x = 28,079.19 × 11,392.26
  4. Step 4: Simplify right side
    20,346.54x = 319,885,433.07
  5. Step 5: Solve for x
    x = 319,885,433.07/20,346.54
  6. Step 6: Final answer
    x = 15,721.86

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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.