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Finding the Fourth Proportional to 19,745.71, 29,623.19 and 13,508.66

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Solution

The fourth proportional to 19,745.71, 29,623.19 and 13,508.66 is: 20,266.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,745.71 : 29,623.19 = 13,508.66 : x
  2. Step 2: Convert to fraction form
    19,745.71/29,623.19 = 13,508.66/x
  3. Step 3: Cross multiply
    19,745.71x = 29,623.19 × 13,508.66
  4. Step 4: Simplify right side
    19,745.71x = 400,169,487.48
  5. Step 5: Solve for x
    x = 400,169,487.48/19,745.71
  6. Step 6: Final answer
    x = 20,266.15

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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.