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Finding the Fourth Proportional to 12,110.70, 18,155.06 and 10,798.50

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Solution

The fourth proportional to 12,110.70, 18,155.06 and 10,798.50 is: 16,187.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,110.70 : 18,155.06 = 10,798.50 : x
  2. Step 2: Convert to fraction form
    12,110.70/18,155.06 = 10,798.50/x
  3. Step 3: Cross multiply
    12,110.70x = 18,155.06 × 10,798.50
  4. Step 4: Simplify right side
    12,110.70x = 196,047,415.41
  5. Step 5: Solve for x
    x = 196,047,415.41/12,110.70
  6. Step 6: Final answer
    x = 16,187.95

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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.