Home / 13,186.83-19,761.80-7,638.69

Finding the Fourth Proportional to 13,186.83, 19,761.80 and 7,638.69

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Solution

The fourth proportional to 13,186.83, 19,761.80 and 7,638.69 is: 11,447.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.83 : 19,761.80 = 7,638.69 : x
  2. Step 2: Convert to fraction form
    13,186.83/19,761.80 = 7,638.69/x
  3. Step 3: Cross multiply
    13,186.83x = 19,761.80 × 7,638.69
  4. Step 4: Simplify right side
    13,186.83x = 150,954,225.85
  5. Step 5: Solve for x
    x = 150,954,225.85/13,186.83
  6. Step 6: Final answer
    x = 11,447.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.