Home / 12,940.48-19,412.52-4,172.44

Finding the Fourth Proportional to 12,940.48, 19,412.52 and 4,172.44

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Solution

The fourth proportional to 12,940.48, 19,412.52 and 4,172.44 is: 6,259.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,940.48 : 19,412.52 = 4,172.44 : x
  2. Step 2: Convert to fraction form
    12,940.48/19,412.52 = 4,172.44/x
  3. Step 3: Cross multiply
    12,940.48x = 19,412.52 × 4,172.44
  4. Step 4: Simplify right side
    12,940.48x = 80,997,574.95
  5. Step 5: Solve for x
    x = 80,997,574.95/12,940.48
  6. Step 6: Final answer
    x = 6,259.24

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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.