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Finding the Fourth Proportional to 19,457.96, 29,189.82 and 7,145

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Solution

The fourth proportional to 19,457.96, 29,189.82 and 7,145 is: 10,718.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,457.96 : 29,189.82 = 7,145 : x
  2. Step 2: Convert to fraction form
    19,457.96/29,189.82 = 7,145/x
  3. Step 3: Cross multiply
    19,457.96x = 29,189.82 × 7,145
  4. Step 4: Simplify right side
    19,457.96x = 208,561,263.90
  5. Step 5: Solve for x
    x = 208,561,263.90/19,457.96
  6. Step 6: Final answer
    x = 10,718.56

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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.