Home / 12,821.36-19,231.34-3,461.24

Finding the Fourth Proportional to 12,821.36, 19,231.34 and 3,461.24

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Solution

The fourth proportional to 12,821.36, 19,231.34 and 3,461.24 is: 5,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.36 : 19,231.34 = 3,461.24 : x
  2. Step 2: Convert to fraction form
    12,821.36/19,231.34 = 3,461.24/x
  3. Step 3: Cross multiply
    12,821.36x = 19,231.34 × 3,461.24
  4. Step 4: Simplify right side
    12,821.36x = 66,564,314.03
  5. Step 5: Solve for x
    x = 66,564,314.03/12,821.36
  6. Step 6: Final answer
    x = 5,191.68

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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.