Home / 12,645.05-18,969.80-4,323.11

Finding the Fourth Proportional to 12,645.05, 18,969.80 and 4,323.11

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Solution

The fourth proportional to 12,645.05, 18,969.80 and 4,323.11 is: 6,485.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645.05 : 18,969.80 = 4,323.11 : x
  2. Step 2: Convert to fraction form
    12,645.05/18,969.80 = 4,323.11/x
  3. Step 3: Cross multiply
    12,645.05x = 18,969.80 × 4,323.11
  4. Step 4: Simplify right side
    12,645.05x = 82,008,415.61
  5. Step 5: Solve for x
    x = 82,008,415.61/12,645.05
  6. Step 6: Final answer
    x = 6,485.42

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Double scale
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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.