Home / 20,374.19-28,118-11,992.31

Finding the Fourth Proportional to 20,374.19, 28,118 and 11,992.31

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Solution

The fourth proportional to 20,374.19, 28,118 and 11,992.31 is: 16,550.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.19 : 28,118 = 11,992.31 : x
  2. Step 2: Convert to fraction form
    20,374.19/28,118 = 11,992.31/x
  3. Step 3: Cross multiply
    20,374.19x = 28,118 × 11,992.31
  4. Step 4: Simplify right side
    20,374.19x = 337,199,772.58
  5. Step 5: Solve for x
    x = 337,199,772.58/20,374.19
  6. Step 6: Final answer
    x = 16,550.34

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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.