Home / 12,940.48-19,405.32-6,369.76

Finding the Fourth Proportional to 12,940.48, 19,405.32 and 6,369.76

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Solution

The fourth proportional to 12,940.48, 19,405.32 and 6,369.76 is: 9,551.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.48 : 19,405.32 = 6,369.76 : x
  2. Step 2: Convert to fraction form
    12,940.48/19,405.32 = 6,369.76/x
  3. Step 3: Cross multiply
    12,940.48x = 19,405.32 × 6,369.76
  4. Step 4: Simplify right side
    12,940.48x = 123,607,231.12
  5. Step 5: Solve for x
    x = 123,607,231.12/12,940.48
  6. Step 6: Final answer
    x = 9,551.98

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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.