Home / 20,863.90-28,782.52-18,476.30

Finding the Fourth Proportional to 20,863.90, 28,782.52 and 18,476.30

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Solution

The fourth proportional to 20,863.90, 28,782.52 and 18,476.30 is: 25,488.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,863.90 : 28,782.52 = 18,476.30 : x
  2. Step 2: Convert to fraction form
    20,863.90/28,782.52 = 18,476.30/x
  3. Step 3: Cross multiply
    20,863.90x = 28,782.52 × 18,476.30
  4. Step 4: Simplify right side
    20,863.90x = 531,794,474.28
  5. Step 5: Solve for x
    x = 531,794,474.28/20,863.90
  6. Step 6: Final answer
    x = 25,488.74

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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.