Home / 13,074.22-18,042.54-7,105.90

Finding the Fourth Proportional to 13,074.22, 18,042.54 and 7,105.90

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Solution

The fourth proportional to 13,074.22, 18,042.54 and 7,105.90 is: 9,806.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.22 : 18,042.54 = 7,105.90 : x
  2. Step 2: Convert to fraction form
    13,074.22/18,042.54 = 7,105.90/x
  3. Step 3: Cross multiply
    13,074.22x = 18,042.54 × 7,105.90
  4. Step 4: Simplify right side
    13,074.22x = 128,208,449.46
  5. Step 5: Solve for x
    x = 128,208,449.46/13,074.22
  6. Step 6: Final answer
    x = 9,806.21

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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.