Home / 12,889.87-19,317.49-5,492.34

Finding the Fourth Proportional to 12,889.87, 19,317.49 and 5,492.34

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Solution

The fourth proportional to 12,889.87, 19,317.49 and 5,492.34 is: 8,231.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.87 : 19,317.49 = 5,492.34 : x
  2. Step 2: Convert to fraction form
    12,889.87/19,317.49 = 5,492.34/x
  3. Step 3: Cross multiply
    12,889.87x = 19,317.49 × 5,492.34
  4. Step 4: Simplify right side
    12,889.87x = 106,098,209.30
  5. Step 5: Solve for x
    x = 106,098,209.30/12,889.87
  6. Step 6: Final answer
    x = 8,231.13

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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.