Home / 19,125.64-28,644.72-12,105.37

Finding the Fourth Proportional to 19,125.64, 28,644.72 and 12,105.37

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Solution

The fourth proportional to 19,125.64, 28,644.72 and 12,105.37 is: 18,130.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125.64 : 28,644.72 = 12,105.37 : x
  2. Step 2: Convert to fraction form
    19,125.64/28,644.72 = 12,105.37/x
  3. Step 3: Cross multiply
    19,125.64x = 28,644.72 × 12,105.37
  4. Step 4: Simplify right side
    19,125.64x = 346,754,934.15
  5. Step 5: Solve for x
    x = 346,754,934.15/19,125.64
  6. Step 6: Final answer
    x = 18,130.37

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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.