Home / 13,701.23-18,905.67-8,320.87

Finding the Fourth Proportional to 13,701.23, 18,905.67 and 8,320.87

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Solution

The fourth proportional to 13,701.23, 18,905.67 and 8,320.87 is: 11,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,701.23 : 18,905.67 = 8,320.87 : x
  2. Step 2: Convert to fraction form
    13,701.23/18,905.67 = 8,320.87/x
  3. Step 3: Cross multiply
    13,701.23x = 18,905.67 × 8,320.87
  4. Step 4: Simplify right side
    13,701.23x = 157,311,622.33
  5. Step 5: Solve for x
    x = 157,311,622.33/13,701.23
  6. Step 6: Final answer
    x = 11,481.57

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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.