Home / 13,138.78-19,697.73-7,585.84

Finding the Fourth Proportional to 13,138.78, 19,697.73 and 7,585.84

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Solution

The fourth proportional to 13,138.78, 19,697.73 and 7,585.84 is: 11,372.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,138.78 : 19,697.73 = 7,585.84 : x
  2. Step 2: Convert to fraction form
    13,138.78/19,697.73 = 7,585.84/x
  3. Step 3: Cross multiply
    13,138.78x = 19,697.73 × 7,585.84
  4. Step 4: Simplify right side
    13,138.78x = 149,423,828.14
  5. Step 5: Solve for x
    x = 149,423,828.14/13,138.78
  6. Step 6: Final answer
    x = 11,372.73

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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.