Home / 12,126.15-16,733.61-6,821.19

Finding the Fourth Proportional to 12,126.15, 16,733.61 and 6,821.19

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Solution

The fourth proportional to 12,126.15, 16,733.61 and 6,821.19 is: 9,412.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126.15 : 16,733.61 = 6,821.19 : x
  2. Step 2: Convert to fraction form
    12,126.15/16,733.61 = 6,821.19/x
  3. Step 3: Cross multiply
    12,126.15x = 16,733.61 × 6,821.19
  4. Step 4: Simplify right side
    12,126.15x = 114,143,133.20
  5. Step 5: Solve for x
    x = 114,143,133.20/12,126.15
  6. Step 6: Final answer
    x = 9,412.97

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Half scale
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Double scale
Find fourth proportional to 12,127.15, 16,734.99 and 6,822.19
Similar ratio
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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.