Home / 21,235.44-31,856.04-7,382.64

Finding the Fourth Proportional to 21,235.44, 31,856.04 and 7,382.64

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Solution

The fourth proportional to 21,235.44, 31,856.04 and 7,382.64 is: 11,074.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,235.44 : 31,856.04 = 7,382.64 : x
  2. Step 2: Convert to fraction form
    21,235.44/31,856.04 = 7,382.64/x
  3. Step 3: Cross multiply
    21,235.44x = 31,856.04 × 7,382.64
  4. Step 4: Simplify right side
    21,235.44x = 235,181,675.15
  5. Step 5: Solve for x
    x = 235,181,675.15/21,235.44
  6. Step 6: Final answer
    x = 11,074.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.