Home / 19,900.08-27,452.93-12,828.78

Finding the Fourth Proportional to 19,900.08, 27,452.93 and 12,828.78

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Solution

The fourth proportional to 19,900.08, 27,452.93 and 12,828.78 is: 17,697.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,900.08 : 27,452.93 = 12,828.78 : x
  2. Step 2: Convert to fraction form
    19,900.08/27,452.93 = 12,828.78/x
  3. Step 3: Cross multiply
    19,900.08x = 27,452.93 × 12,828.78
  4. Step 4: Simplify right side
    19,900.08x = 352,187,535.18
  5. Step 5: Solve for x
    x = 352,187,535.18/19,900.08
  6. Step 6: Final answer
    x = 17,697.79

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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.