Home / 13,151.70-18,130.47-8,112.52

Finding the Fourth Proportional to 13,151.70, 18,130.47 and 8,112.52

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Solution

The fourth proportional to 13,151.70, 18,130.47 and 8,112.52 is: 11,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.70 : 18,130.47 = 8,112.52 : x
  2. Step 2: Convert to fraction form
    13,151.70/18,130.47 = 8,112.52/x
  3. Step 3: Cross multiply
    13,151.70x = 18,130.47 × 8,112.52
  4. Step 4: Simplify right side
    13,151.70x = 147,083,792.73
  5. Step 5: Solve for x
    x = 147,083,792.73/13,151.70
  6. Step 6: Final answer
    x = 11,183.63

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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.