Home / 13,551.90-20,325.48-3,689.88

Finding the Fourth Proportional to 13,551.90, 20,325.48 and 3,689.88

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Solution

The fourth proportional to 13,551.90, 20,325.48 and 3,689.88 is: 5,534.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,551.90 : 20,325.48 = 3,689.88 : x
  2. Step 2: Convert to fraction form
    13,551.90/20,325.48 = 3,689.88/x
  3. Step 3: Cross multiply
    13,551.90x = 20,325.48 × 3,689.88
  4. Step 4: Simplify right side
    13,551.90x = 74,998,582.14
  5. Step 5: Solve for x
    x = 74,998,582.14/13,551.90
  6. Step 6: Final answer
    x = 5,534.17

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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.