Home / 12,930.94-19,378.34-6,995.06

Finding the Fourth Proportional to 12,930.94, 19,378.34 and 6,995.06

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Solution

The fourth proportional to 12,930.94, 19,378.34 and 6,995.06 is: 10,482.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.94 : 19,378.34 = 6,995.06 : x
  2. Step 2: Convert to fraction form
    12,930.94/19,378.34 = 6,995.06/x
  3. Step 3: Cross multiply
    12,930.94x = 19,378.34 × 6,995.06
  4. Step 4: Simplify right side
    12,930.94x = 135,552,618.03
  5. Step 5: Solve for x
    x = 135,552,618.03/12,930.94
  6. Step 6: Final answer
    x = 10,482.81

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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.