Home / 20,331.14-28,059.48-12,374.51

Finding the Fourth Proportional to 20,331.14, 28,059.48 and 12,374.51

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Solution

The fourth proportional to 20,331.14, 28,059.48 and 12,374.51 is: 17,078.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,331.14 : 28,059.48 = 12,374.51 : x
  2. Step 2: Convert to fraction form
    20,331.14/28,059.48 = 12,374.51/x
  3. Step 3: Cross multiply
    20,331.14x = 28,059.48 × 12,374.51
  4. Step 4: Simplify right side
    20,331.14x = 347,222,175.56
  5. Step 5: Solve for x
    x = 347,222,175.56/20,331.14
  6. Step 6: Final answer
    x = 17,078.35

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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.