Home / 13,258.90-19,887.90-3,398.28

Finding the Fourth Proportional to 13,258.90, 19,887.90 and 3,398.28

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Solution

The fourth proportional to 13,258.90, 19,887.90 and 3,398.28 is: 5,097.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.90 : 19,887.90 = 3,398.28 : x
  2. Step 2: Convert to fraction form
    13,258.90/19,887.90 = 3,398.28/x
  3. Step 3: Cross multiply
    13,258.90x = 19,887.90 × 3,398.28
  4. Step 4: Simplify right side
    13,258.90x = 67,584,553.37
  5. Step 5: Solve for x
    x = 67,584,553.37/13,258.90
  6. Step 6: Final answer
    x = 5,097.30

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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.