Home / 13,916.81-20,876.43-3,528.56

Finding the Fourth Proportional to 13,916.81, 20,876.43 and 3,528.56

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Solution

The fourth proportional to 13,916.81, 20,876.43 and 3,528.56 is: 5,293.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.81 : 20,876.43 = 3,528.56 : x
  2. Step 2: Convert to fraction form
    13,916.81/20,876.43 = 3,528.56/x
  3. Step 3: Cross multiply
    13,916.81x = 20,876.43 × 3,528.56
  4. Step 4: Simplify right side
    13,916.81x = 73,663,801.26
  5. Step 5: Solve for x
    x = 73,663,801.26/13,916.81
  6. Step 6: Final answer
    x = 5,293.15

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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.