Home / 25,730.78-38,528.51-20,706.44

Finding the Fourth Proportional to 25,730.78, 38,528.51 and 20,706.44

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Solution

The fourth proportional to 25,730.78, 38,528.51 and 20,706.44 is: 31,005.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,730.78 : 38,528.51 = 20,706.44 : x
  2. Step 2: Convert to fraction form
    25,730.78/38,528.51 = 20,706.44/x
  3. Step 3: Cross multiply
    25,730.78x = 38,528.51 × 20,706.44
  4. Step 4: Simplify right side
    25,730.78x = 797,787,984.43
  5. Step 5: Solve for x
    x = 797,787,984.43/25,730.78
  6. Step 6: Final answer
    x = 31,005.21

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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.