Home / 12,606.24-17,385.66-8,128.56

Finding the Fourth Proportional to 12,606.24, 17,385.66 and 8,128.56

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Solution

The fourth proportional to 12,606.24, 17,385.66 and 8,128.56 is: 11,210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.24 : 17,385.66 = 8,128.56 : x
  2. Step 2: Convert to fraction form
    12,606.24/17,385.66 = 8,128.56/x
  3. Step 3: Cross multiply
    12,606.24x = 17,385.66 × 8,128.56
  4. Step 4: Simplify right side
    12,606.24x = 141,320,380.45
  5. Step 5: Solve for x
    x = 141,320,380.45/12,606.24
  6. Step 6: Final answer
    x = 11,210.35

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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.