Home / 13,717.98-18,930.96-7,749.72

Finding the Fourth Proportional to 13,717.98, 18,930.96 and 7,749.72

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Solution

The fourth proportional to 13,717.98, 18,930.96 and 7,749.72 is: 10,694.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.98 : 18,930.96 = 7,749.72 : x
  2. Step 2: Convert to fraction form
    13,717.98/18,930.96 = 7,749.72/x
  3. Step 3: Cross multiply
    13,717.98x = 18,930.96 × 7,749.72
  4. Step 4: Simplify right side
    13,717.98x = 146,709,639.33
  5. Step 5: Solve for x
    x = 146,709,639.33/13,717.98
  6. Step 6: Final answer
    x = 10,694.70

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1.5x scale

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.