Home / 12,964.05-19,379.25-9,639.81

Finding the Fourth Proportional to 12,964.05, 19,379.25 and 9,639.81

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Solution

The fourth proportional to 12,964.05, 19,379.25 and 9,639.81 is: 14,410.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,964.05 : 19,379.25 = 9,639.81 : x
  2. Step 2: Convert to fraction form
    12,964.05/19,379.25 = 9,639.81/x
  3. Step 3: Cross multiply
    12,964.05x = 19,379.25 × 9,639.81
  4. Step 4: Simplify right side
    12,964.05x = 186,812,287.94
  5. Step 5: Solve for x
    x = 186,812,287.94/12,964.05
  6. Step 6: Final answer
    x = 14,410.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.