Home / 20,029.58-27,631.62-12,958.28

Finding the Fourth Proportional to 20,029.58, 27,631.62 and 12,958.28

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Solution

The fourth proportional to 20,029.58, 27,631.62 and 12,958.28 is: 17,876.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,029.58 : 27,631.62 = 12,958.28 : x
  2. Step 2: Convert to fraction form
    20,029.58/27,631.62 = 12,958.28/x
  3. Step 3: Cross multiply
    20,029.58x = 27,631.62 × 12,958.28
  4. Step 4: Simplify right side
    20,029.58x = 358,058,268.81
  5. Step 5: Solve for x
    x = 358,058,268.81/20,029.58
  6. Step 6: Final answer
    x = 17,876.47

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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.