Home / 13,787.25-20,684.34-4,428.10

Finding the Fourth Proportional to 13,787.25, 20,684.34 and 4,428.10

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Solution

The fourth proportional to 13,787.25, 20,684.34 and 4,428.10 is: 6,643.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,787.25 : 20,684.34 = 4,428.10 : x
  2. Step 2: Convert to fraction form
    13,787.25/20,684.34 = 4,428.10/x
  3. Step 3: Cross multiply
    13,787.25x = 20,684.34 × 4,428.10
  4. Step 4: Simplify right side
    13,787.25x = 91,592,325.95
  5. Step 5: Solve for x
    x = 91,592,325.95/13,787.25
  6. Step 6: Final answer
    x = 6,643.26

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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.