Home / 13,151.84-18,149.44-7,183.51

Finding the Fourth Proportional to 13,151.84, 18,149.44 and 7,183.51

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Solution

The fourth proportional to 13,151.84, 18,149.44 and 7,183.51 is: 9,913.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.84 : 18,149.44 = 7,183.51 : x
  2. Step 2: Convert to fraction form
    13,151.84/18,149.44 = 7,183.51/x
  3. Step 3: Cross multiply
    13,151.84x = 18,149.44 × 7,183.51
  4. Step 4: Simplify right side
    13,151.84x = 130,376,683.73
  5. Step 5: Solve for x
    x = 130,376,683.73/13,151.84
  6. Step 6: Final answer
    x = 9,913.19

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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.