Home / 19,608.60-29,415.78-6,457.80

Finding the Fourth Proportional to 19,608.60, 29,415.78 and 6,457.80

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Solution

The fourth proportional to 19,608.60, 29,415.78 and 6,457.80 is: 9,687.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,608.60 : 29,415.78 = 6,457.80 : x
  2. Step 2: Convert to fraction form
    19,608.60/29,415.78 = 6,457.80/x
  3. Step 3: Cross multiply
    19,608.60x = 29,415.78 × 6,457.80
  4. Step 4: Simplify right side
    19,608.60x = 189,961,224.08
  5. Step 5: Solve for x
    x = 189,961,224.08/19,608.60
  6. Step 6: Final answer
    x = 9,687.65

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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.