Home / 13,606.43-20,390.17-7,750.94

Finding the Fourth Proportional to 13,606.43, 20,390.17 and 7,750.94

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Solution

The fourth proportional to 13,606.43, 20,390.17 and 7,750.94 is: 11,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.43 : 20,390.17 = 7,750.94 : x
  2. Step 2: Convert to fraction form
    13,606.43/20,390.17 = 7,750.94/x
  3. Step 3: Cross multiply
    13,606.43x = 20,390.17 × 7,750.94
  4. Step 4: Simplify right side
    13,606.43x = 158,042,862.93
  5. Step 5: Solve for x
    x = 158,042,862.93/13,606.43
  6. Step 6: Final answer
    x = 11,615.31

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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.