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Finding the Fourth Proportional to 12,113, 16,719.78 and 8,810.60

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Solution

The fourth proportional to 12,113, 16,719.78 and 8,810.60 is: 12,161.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113 : 16,719.78 = 8,810.60 : x
  2. Step 2: Convert to fraction form
    12,113/16,719.78 = 8,810.60/x
  3. Step 3: Cross multiply
    12,113x = 16,719.78 × 8,810.60
  4. Step 4: Simplify right side
    12,113x = 147,311,293.67
  5. Step 5: Solve for x
    x = 147,311,293.67/12,113
  6. Step 6: Final answer
    x = 12,161.42

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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.