Home / 13,151.85-18,146.57-7,845.63

Finding the Fourth Proportional to 13,151.85, 18,146.57 and 7,845.63

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Solution

The fourth proportional to 13,151.85, 18,146.57 and 7,845.63 is: 10,825.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,151.85 : 18,146.57 = 7,845.63 : x
  2. Step 2: Convert to fraction form
    13,151.85/18,146.57 = 7,845.63/x
  3. Step 3: Cross multiply
    13,151.85x = 18,146.57 × 7,845.63
  4. Step 4: Simplify right side
    13,151.85x = 142,371,273.99
  5. Step 5: Solve for x
    x = 142,371,273.99/13,151.85
  6. Step 6: Final answer
    x = 10,825.19

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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.