Home / 12,913.65-19,370.61-5,513.49

Finding the Fourth Proportional to 12,913.65, 19,370.61 and 5,513.49

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Solution

The fourth proportional to 12,913.65, 19,370.61 and 5,513.49 is: 8,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,913.65 : 19,370.61 = 5,513.49 : x
  2. Step 2: Convert to fraction form
    12,913.65/19,370.61 = 5,513.49/x
  3. Step 3: Cross multiply
    12,913.65x = 19,370.61 × 5,513.49
  4. Step 4: Simplify right side
    12,913.65x = 106,799,664.53
  5. Step 5: Solve for x
    x = 106,799,664.53/12,913.65
  6. Step 6: Final answer
    x = 8,270.29

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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.