Home / 13,137.78-19,709.64-4,373.04

Finding the Fourth Proportional to 13,137.78, 19,709.64 and 4,373.04

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Solution

The fourth proportional to 13,137.78, 19,709.64 and 4,373.04 is: 6,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.78 : 19,709.64 = 4,373.04 : x
  2. Step 2: Convert to fraction form
    13,137.78/19,709.64 = 4,373.04/x
  3. Step 3: Cross multiply
    13,137.78x = 19,709.64 × 4,373.04
  4. Step 4: Simplify right side
    13,137.78x = 86,191,044.11
  5. Step 5: Solve for x
    x = 86,191,044.11/13,137.78
  6. Step 6: Final answer
    x = 6,560.55

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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.