Home / 11,485.32-15,849.54-6,449.58

Finding the Fourth Proportional to 11,485.32, 15,849.54 and 6,449.58

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Solution

The fourth proportional to 11,485.32, 15,849.54 and 6,449.58 is: 8,900.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,485.32 : 15,849.54 = 6,449.58 : x
  2. Step 2: Convert to fraction form
    11,485.32/15,849.54 = 6,449.58/x
  3. Step 3: Cross multiply
    11,485.32x = 15,849.54 × 6,449.58
  4. Step 4: Simplify right side
    11,485.32x = 102,222,876.19
  5. Step 5: Solve for x
    x = 102,222,876.19/11,485.32
  6. Step 6: Final answer
    x = 8,900.31

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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.