Home / 12,606.28-17,399.82-8,135.08

Finding the Fourth Proportional to 12,606.28, 17,399.82 and 8,135.08

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Solution

The fourth proportional to 12,606.28, 17,399.82 and 8,135.08 is: 11,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,606.28 : 17,399.82 = 8,135.08 : x
  2. Step 2: Convert to fraction form
    12,606.28/17,399.82 = 8,135.08/x
  3. Step 3: Cross multiply
    12,606.28x = 17,399.82 × 8,135.08
  4. Step 4: Simplify right side
    12,606.28x = 141,548,927.69
  5. Step 5: Solve for x
    x = 141,548,927.69/12,606.28
  6. Step 6: Final answer
    x = 11,228.45

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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.