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Finding the Fourth Proportional to 19,605.51, 29,388.20 and 8,502.84

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Solution

The fourth proportional to 19,605.51, 29,388.20 and 8,502.84 is: 12,745.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,605.51 : 29,388.20 = 8,502.84 : x
  2. Step 2: Convert to fraction form
    19,605.51/29,388.20 = 8,502.84/x
  3. Step 3: Cross multiply
    19,605.51x = 29,388.20 × 8,502.84
  4. Step 4: Simplify right side
    19,605.51x = 249,883,119.97
  5. Step 5: Solve for x
    x = 249,883,119.97/19,605.51
  6. Step 6: Final answer
    x = 12,745.56

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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.