Home / 12,129.02-18,193.56-3,364.40

Finding the Fourth Proportional to 12,129.02, 18,193.56 and 3,364.40

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Solution

The fourth proportional to 12,129.02, 18,193.56 and 3,364.40 is: 5,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,129.02 : 18,193.56 = 3,364.40 : x
  2. Step 2: Convert to fraction form
    12,129.02/18,193.56 = 3,364.40/x
  3. Step 3: Cross multiply
    12,129.02x = 18,193.56 × 3,364.40
  4. Step 4: Simplify right side
    12,129.02x = 61,210,413.26
  5. Step 5: Solve for x
    x = 61,210,413.26/12,129.02
  6. Step 6: Final answer
    x = 5,046.61

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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.