Home / 19,300.97-28,945.30-9,939.76

Finding the Fourth Proportional to 19,300.97, 28,945.30 and 9,939.76

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Solution

The fourth proportional to 19,300.97, 28,945.30 and 9,939.76 is: 14,906.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,300.97 : 28,945.30 = 9,939.76 : x
  2. Step 2: Convert to fraction form
    19,300.97/28,945.30 = 9,939.76/x
  3. Step 3: Cross multiply
    19,300.97x = 28,945.30 × 9,939.76
  4. Step 4: Simplify right side
    19,300.97x = 287,709,419.37
  5. Step 5: Solve for x
    x = 287,709,419.37/19,300.97
  6. Step 6: Final answer
    x = 14,906.47

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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.