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Finding the Fourth Proportional to 14,745.42, 20,347.90 and 8,371.85

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Solution

The fourth proportional to 14,745.42, 20,347.90 and 8,371.85 is: 11,552.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,745.42 : 20,347.90 = 8,371.85 : x
  2. Step 2: Convert to fraction form
    14,745.42/20,347.90 = 8,371.85/x
  3. Step 3: Cross multiply
    14,745.42x = 20,347.90 × 8,371.85
  4. Step 4: Simplify right side
    14,745.42x = 170,349,623.19
  5. Step 5: Solve for x
    x = 170,349,623.19/14,745.42
  6. Step 6: Final answer
    x = 11,552.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.