Home / 12,280.36-18,422.94-4,888.28

Finding the Fourth Proportional to 12,280.36, 18,422.94 and 4,888.28

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Solution

The fourth proportional to 12,280.36, 18,422.94 and 4,888.28 is: 7,333.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.36 : 18,422.94 = 4,888.28 : x
  2. Step 2: Convert to fraction form
    12,280.36/18,422.94 = 4,888.28/x
  3. Step 3: Cross multiply
    12,280.36x = 18,422.94 × 4,888.28
  4. Step 4: Simplify right side
    12,280.36x = 90,056,489.14
  5. Step 5: Solve for x
    x = 90,056,489.14/12,280.36
  6. Step 6: Final answer
    x = 7,333.38

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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.