Home / 25,694.72-38,511.39-13,220.72

Finding the Fourth Proportional to 25,694.72, 38,511.39 and 13,220.72

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Solution

The fourth proportional to 25,694.72, 38,511.39 and 13,220.72 is: 19,815.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,694.72 : 38,511.39 = 13,220.72 : x
  2. Step 2: Convert to fraction form
    25,694.72/38,511.39 = 13,220.72/x
  3. Step 3: Cross multiply
    25,694.72x = 38,511.39 × 13,220.72
  4. Step 4: Simplify right side
    25,694.72x = 509,148,111.44
  5. Step 5: Solve for x
    x = 509,148,111.44/25,694.72
  6. Step 6: Final answer
    x = 19,815.29

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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.