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Finding the Fourth Proportional to 13,745.08, 20,617.98 and 7,898.92

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Solution

The fourth proportional to 13,745.08, 20,617.98 and 7,898.92 is: 11,848.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,745.08 : 20,617.98 = 7,898.92 : x
  2. Step 2: Convert to fraction form
    13,745.08/20,617.98 = 7,898.92/x
  3. Step 3: Cross multiply
    13,745.08x = 20,617.98 × 7,898.92
  4. Step 4: Simplify right side
    13,745.08x = 162,859,774.58
  5. Step 5: Solve for x
    x = 162,859,774.58/13,745.08
  6. Step 6: Final answer
    x = 11,848.59

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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.