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Finding the Fourth Proportional to 12,164.40, 18,235.80 and 10,852.20

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Solution

The fourth proportional to 12,164.40, 18,235.80 and 10,852.20 is: 16,268.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.40 : 18,235.80 = 10,852.20 : x
  2. Step 2: Convert to fraction form
    12,164.40/18,235.80 = 10,852.20/x
  3. Step 3: Cross multiply
    12,164.40x = 18,235.80 × 10,852.20
  4. Step 4: Simplify right side
    12,164.40x = 197,898,548.76
  5. Step 5: Solve for x
    x = 197,898,548.76/12,164.40
  6. Step 6: Final answer
    x = 16,268.67

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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.