Home / 31,916.49-47,874.69-8,542.32

Finding the Fourth Proportional to 31,916.49, 47,874.69 and 8,542.32

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Solution

The fourth proportional to 31,916.49, 47,874.69 and 8,542.32 is: 12,813.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,916.49 : 47,874.69 = 8,542.32 : x
  2. Step 2: Convert to fraction form
    31,916.49/47,874.69 = 8,542.32/x
  3. Step 3: Cross multiply
    31,916.49x = 47,874.69 × 8,542.32
  4. Step 4: Simplify right side
    31,916.49x = 408,960,921.88
  5. Step 5: Solve for x
    x = 408,960,921.88/31,916.49
  6. Step 6: Final answer
    x = 12,813.47

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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.