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Finding the Fourth Proportional to 12,065.58, 16,627.95 and 9,408.78

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Solution

The fourth proportional to 12,065.58, 16,627.95 and 9,408.78 is: 12,966.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,065.58 : 16,627.95 = 9,408.78 : x
  2. Step 2: Convert to fraction form
    12,065.58/16,627.95 = 9,408.78/x
  3. Step 3: Cross multiply
    12,065.58x = 16,627.95 × 9,408.78
  4. Step 4: Simplify right side
    12,065.58x = 156,448,723.40
  5. Step 5: Solve for x
    x = 156,448,723.40/12,065.58
  6. Step 6: Final answer
    x = 12,966.53

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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.