Home / 13,384.21-18,476.63-9,408.73

Finding the Fourth Proportional to 13,384.21, 18,476.63 and 9,408.73

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Solution

The fourth proportional to 13,384.21, 18,476.63 and 9,408.73 is: 12,988.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,384.21 : 18,476.63 = 9,408.73 : x
  2. Step 2: Convert to fraction form
    13,384.21/18,476.63 = 9,408.73/x
  3. Step 3: Cross multiply
    13,384.21x = 18,476.63 × 9,408.73
  4. Step 4: Simplify right side
    13,384.21x = 173,841,622.98
  5. Step 5: Solve for x
    x = 173,841,622.98/13,384.21
  6. Step 6: Final answer
    x = 12,988.56

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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.