Home / 19,491.12-29,236.44-8,405.60

Finding the Fourth Proportional to 19,491.12, 29,236.44 and 8,405.60

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Solution

The fourth proportional to 19,491.12, 29,236.44 and 8,405.60 is: 12,608.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,491.12 : 29,236.44 = 8,405.60 : x
  2. Step 2: Convert to fraction form
    19,491.12/29,236.44 = 8,405.60/x
  3. Step 3: Cross multiply
    19,491.12x = 29,236.44 × 8,405.60
  4. Step 4: Simplify right side
    19,491.12x = 245,749,820.06
  5. Step 5: Solve for x
    x = 245,749,820.06/19,491.12
  6. Step 6: Final answer
    x = 12,608.30

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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.