Home / 19,687.52-27,153.40-12,614.60

Finding the Fourth Proportional to 19,687.52, 27,153.40 and 12,614.60

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Solution

The fourth proportional to 19,687.52, 27,153.40 and 12,614.60 is: 17,398.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.52 : 27,153.40 = 12,614.60 : x
  2. Step 2: Convert to fraction form
    19,687.52/27,153.40 = 12,614.60/x
  3. Step 3: Cross multiply
    19,687.52x = 27,153.40 × 12,614.60
  4. Step 4: Simplify right side
    19,687.52x = 342,529,279.64
  5. Step 5: Solve for x
    x = 342,529,279.64/19,687.52
  6. Step 6: Final answer
    x = 17,398.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.