Home / 13,415.67-18,510.93-8,110.80

Finding the Fourth Proportional to 13,415.67, 18,510.93 and 8,110.80

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Solution

The fourth proportional to 13,415.67, 18,510.93 and 8,110.80 is: 11,191.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.67 : 18,510.93 = 8,110.80 : x
  2. Step 2: Convert to fraction form
    13,415.67/18,510.93 = 8,110.80/x
  3. Step 3: Cross multiply
    13,415.67x = 18,510.93 × 8,110.80
  4. Step 4: Simplify right side
    13,415.67x = 150,138,451.04
  5. Step 5: Solve for x
    x = 150,138,451.04/13,415.67
  6. Step 6: Final answer
    x = 11,191.27

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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.