Home / 11,619.60-16,026.80-7,145.88

Finding the Fourth Proportional to 11,619.60, 16,026.80 and 7,145.88

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Solution

The fourth proportional to 11,619.60, 16,026.80 and 7,145.88 is: 9,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,619.60 : 16,026.80 = 7,145.88 : x
  2. Step 2: Convert to fraction form
    11,619.60/16,026.80 = 7,145.88/x
  3. Step 3: Cross multiply
    11,619.60x = 16,026.80 × 7,145.88
  4. Step 4: Simplify right side
    11,619.60x = 114,525,589.58
  5. Step 5: Solve for x
    x = 114,525,589.58/11,619.60
  6. Step 6: Final answer
    x = 9,856.24

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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.