Home / 11,155.65-15,405.21-7,183.68

Finding the Fourth Proportional to 11,155.65, 15,405.21 and 7,183.68

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Solution

The fourth proportional to 11,155.65, 15,405.21 and 7,183.68 is: 9,920.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,155.65 : 15,405.21 = 7,183.68 : x
  2. Step 2: Convert to fraction form
    11,155.65/15,405.21 = 7,183.68/x
  3. Step 3: Cross multiply
    11,155.65x = 15,405.21 × 7,183.68
  4. Step 4: Simplify right side
    11,155.65x = 110,666,098.97
  5. Step 5: Solve for x
    x = 110,666,098.97/11,155.65
  6. Step 6: Final answer
    x = 9,920.18

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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.