Home / 13,110.95-18,093.54-7,143.18

Finding the Fourth Proportional to 13,110.95, 18,093.54 and 7,143.18

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Solution

The fourth proportional to 13,110.95, 18,093.54 and 7,143.18 is: 9,857.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,110.95 : 18,093.54 = 7,143.18 : x
  2. Step 2: Convert to fraction form
    13,110.95/18,093.54 = 7,143.18/x
  3. Step 3: Cross multiply
    13,110.95x = 18,093.54 × 7,143.18
  4. Step 4: Simplify right side
    13,110.95x = 129,245,371.99
  5. Step 5: Solve for x
    x = 129,245,371.99/13,110.95
  6. Step 6: Final answer
    x = 9,857.82

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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.