Home / 13,608.14-18,778.22-7,558.73

Finding the Fourth Proportional to 13,608.14, 18,778.22 and 7,558.73

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Solution

The fourth proportional to 13,608.14, 18,778.22 and 7,558.73 is: 10,430.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.14 : 18,778.22 = 7,558.73 : x
  2. Step 2: Convert to fraction form
    13,608.14/18,778.22 = 7,558.73/x
  3. Step 3: Cross multiply
    13,608.14x = 18,778.22 × 7,558.73
  4. Step 4: Simplify right side
    13,608.14x = 141,939,363.18
  5. Step 5: Solve for x
    x = 141,939,363.18/13,608.14
  6. Step 6: Final answer
    x = 10,430.47

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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.