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Finding the Fourth Proportional to 16,959.90, 23,406.10 and 9,408.67

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Solution

The fourth proportional to 16,959.90, 23,406.10 and 9,408.67 is: 12,984.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,959.90 : 23,406.10 = 9,408.67 : x
  2. Step 2: Convert to fraction form
    16,959.90/23,406.10 = 9,408.67/x
  3. Step 3: Cross multiply
    16,959.90x = 23,406.10 × 9,408.67
  4. Step 4: Simplify right side
    16,959.90x = 220,220,153.86
  5. Step 5: Solve for x
    x = 220,220,153.86/16,959.90
  6. Step 6: Final answer
    x = 12,984.76

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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.