Home / 12,913.26-19,370-5,513.91

Finding the Fourth Proportional to 12,913.26, 19,370 and 5,513.91

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Solution

The fourth proportional to 12,913.26, 19,370 and 5,513.91 is: 8,270.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.26 : 19,370 = 5,513.91 : x
  2. Step 2: Convert to fraction form
    12,913.26/19,370 = 5,513.91/x
  3. Step 3: Cross multiply
    12,913.26x = 19,370 × 5,513.91
  4. Step 4: Simplify right side
    12,913.26x = 106,804,436.70
  5. Step 5: Solve for x
    x = 106,804,436.70/12,913.26
  6. Step 6: Final answer
    x = 8,270.91

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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.