Home / 12,817.96-19,228.08-3,459.40

Finding the Fourth Proportional to 12,817.96, 19,228.08 and 3,459.40

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Solution

The fourth proportional to 12,817.96, 19,228.08 and 3,459.40 is: 5,189.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,817.96 : 19,228.08 = 3,459.40 : x
  2. Step 2: Convert to fraction form
    12,817.96/19,228.08 = 3,459.40/x
  3. Step 3: Cross multiply
    12,817.96x = 19,228.08 × 3,459.40
  4. Step 4: Simplify right side
    12,817.96x = 66,517,619.95
  5. Step 5: Solve for x
    x = 66,517,619.95/12,817.96
  6. Step 6: Final answer
    x = 5,189.41

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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.