Home / 12,678.12-19,017.18-3,444.12

Finding the Fourth Proportional to 12,678.12, 19,017.18 and 3,444.12

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Solution

The fourth proportional to 12,678.12, 19,017.18 and 3,444.12 is: 5,166.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,678.12 : 19,017.18 = 3,444.12 : x
  2. Step 2: Convert to fraction form
    12,678.12/19,017.18 = 3,444.12/x
  3. Step 3: Cross multiply
    12,678.12x = 19,017.18 × 3,444.12
  4. Step 4: Simplify right side
    12,678.12x = 65,497,449.98
  5. Step 5: Solve for x
    x = 65,497,449.98/12,678.12
  6. Step 6: Final answer
    x = 5,166.18

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Half scale
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Double scale
Find fourth proportional to 12,679.12, 19,018.68 and 3,445.12
Similar ratio
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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.