Home / 20,993.71-31,490.52-14,399.91

Finding the Fourth Proportional to 20,993.71, 31,490.52 and 14,399.91

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Solution

The fourth proportional to 20,993.71, 31,490.52 and 14,399.91 is: 21,599.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,993.71 : 31,490.52 = 14,399.91 : x
  2. Step 2: Convert to fraction form
    20,993.71/31,490.52 = 14,399.91/x
  3. Step 3: Cross multiply
    20,993.71x = 31,490.52 × 14,399.91
  4. Step 4: Simplify right side
    20,993.71x = 453,460,653.85
  5. Step 5: Solve for x
    x = 453,460,653.85/20,993.71
  6. Step 6: Final answer
    x = 21,599.83

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.