Home / 12,619.36-17,406.12-9,962.56

Finding the Fourth Proportional to 12,619.36, 17,406.12 and 9,962.56

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Solution

The fourth proportional to 12,619.36, 17,406.12 and 9,962.56 is: 13,741.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,619.36 : 17,406.12 = 9,962.56 : x
  2. Step 2: Convert to fraction form
    12,619.36/17,406.12 = 9,962.56/x
  3. Step 3: Cross multiply
    12,619.36x = 17,406.12 × 9,962.56
  4. Step 4: Simplify right side
    12,619.36x = 173,409,514.87
  5. Step 5: Solve for x
    x = 173,409,514.87/12,619.36
  6. Step 6: Final answer
    x = 13,741.55

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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.