Home / 13,174.85-19,691.10-12,124.08

Finding the Fourth Proportional to 13,174.85, 19,691.10 and 12,124.08

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Solution

The fourth proportional to 13,174.85, 19,691.10 and 12,124.08 is: 18,120.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,174.85 : 19,691.10 = 12,124.08 : x
  2. Step 2: Convert to fraction form
    13,174.85/19,691.10 = 12,124.08/x
  3. Step 3: Cross multiply
    13,174.85x = 19,691.10 × 12,124.08
  4. Step 4: Simplify right side
    13,174.85x = 238,736,471.69
  5. Step 5: Solve for x
    x = 238,736,471.69/13,174.85
  6. Step 6: Final answer
    x = 18,120.62

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.