Home / 18,083.48-27,129.36-6,990.26

Finding the Fourth Proportional to 18,083.48, 27,129.36 and 6,990.26

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Solution

The fourth proportional to 18,083.48, 27,129.36 and 6,990.26 is: 10,486.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,083.48 : 27,129.36 = 6,990.26 : x
  2. Step 2: Convert to fraction form
    18,083.48/27,129.36 = 6,990.26/x
  3. Step 3: Cross multiply
    18,083.48x = 27,129.36 × 6,990.26
  4. Step 4: Simplify right side
    18,083.48x = 189,641,280.03
  5. Step 5: Solve for x
    x = 189,641,280.03/18,083.48
  6. Step 6: Final answer
    x = 10,486.99

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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.