Home / 12,126.36-16,734.51-6,821.13

Finding the Fourth Proportional to 12,126.36, 16,734.51 and 6,821.13

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Solution

The fourth proportional to 12,126.36, 16,734.51 and 6,821.13 is: 9,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.36 : 16,734.51 = 6,821.13 : x
  2. Step 2: Convert to fraction form
    12,126.36/16,734.51 = 6,821.13/x
  3. Step 3: Cross multiply
    12,126.36x = 16,734.51 × 6,821.13
  4. Step 4: Simplify right side
    12,126.36x = 114,148,268.20
  5. Step 5: Solve for x
    x = 114,148,268.20/12,126.36
  6. Step 6: Final answer
    x = 9,413.23

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.