Home / 13,743.92-18,964.68-7,776.56

Finding the Fourth Proportional to 13,743.92, 18,964.68 and 7,776.56

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Solution

The fourth proportional to 13,743.92, 18,964.68 and 7,776.56 is: 10,730.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,743.92 : 18,964.68 = 7,776.56 : x
  2. Step 2: Convert to fraction form
    13,743.92/18,964.68 = 7,776.56/x
  3. Step 3: Cross multiply
    13,743.92x = 18,964.68 × 7,776.56
  4. Step 4: Simplify right side
    13,743.92x = 147,479,971.90
  5. Step 5: Solve for x
    x = 147,479,971.90/13,743.92
  6. Step 6: Final answer
    x = 10,730.56

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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.