Home / 13,553.34-20,328.81-4,787.82

Finding the Fourth Proportional to 13,553.34, 20,328.81 and 4,787.82

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Solution

The fourth proportional to 13,553.34, 20,328.81 and 4,787.82 is: 7,181.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,553.34 : 20,328.81 = 4,787.82 : x
  2. Step 2: Convert to fraction form
    13,553.34/20,328.81 = 4,787.82/x
  3. Step 3: Cross multiply
    13,553.34x = 20,328.81 × 4,787.82
  4. Step 4: Simplify right side
    13,553.34x = 97,330,683.09
  5. Step 5: Solve for x
    x = 97,330,683.09/13,553.34
  6. Step 6: Final answer
    x = 7,181.31

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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.