Home / 13,276.10-19,915.26-3,415.36

Finding the Fourth Proportional to 13,276.10, 19,915.26 and 3,415.36

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Solution

The fourth proportional to 13,276.10, 19,915.26 and 3,415.36 is: 5,123.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.10 : 19,915.26 = 3,415.36 : x
  2. Step 2: Convert to fraction form
    13,276.10/19,915.26 = 3,415.36/x
  3. Step 3: Cross multiply
    13,276.10x = 19,915.26 × 3,415.36
  4. Step 4: Simplify right side
    13,276.10x = 68,017,665.74
  5. Step 5: Solve for x
    x = 68,017,665.74/13,276.10
  6. Step 6: Final answer
    x = 5,123.32

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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.