Home / 11,165.06-15,407.80-6,449.36

Finding the Fourth Proportional to 11,165.06, 15,407.80 and 6,449.36

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Solution

The fourth proportional to 11,165.06, 15,407.80 and 6,449.36 is: 8,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,165.06 : 15,407.80 = 6,449.36 : x
  2. Step 2: Convert to fraction form
    11,165.06/15,407.80 = 6,449.36/x
  3. Step 3: Cross multiply
    11,165.06x = 15,407.80 × 6,449.36
  4. Step 4: Simplify right side
    11,165.06x = 99,370,355.85
  5. Step 5: Solve for x
    x = 99,370,355.85/11,165.06
  6. Step 6: Final answer
    x = 8,900.12

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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.