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Finding the Fourth Proportional to 16,443.40, 24,665.10 and 7,679.20

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Solution

The fourth proportional to 16,443.40, 24,665.10 and 7,679.20 is: 11,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,443.40 : 24,665.10 = 7,679.20 : x
  2. Step 2: Convert to fraction form
    16,443.40/24,665.10 = 7,679.20/x
  3. Step 3: Cross multiply
    16,443.40x = 24,665.10 × 7,679.20
  4. Step 4: Simplify right side
    16,443.40x = 189,408,235.92
  5. Step 5: Solve for x
    x = 189,408,235.92/16,443.40
  6. Step 6: Final answer
    x = 11,518.80

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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.