Home / 12,911.36-19,365.21-4,145.14

Finding the Fourth Proportional to 12,911.36, 19,365.21 and 4,145.14

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Solution

The fourth proportional to 12,911.36, 19,365.21 and 4,145.14 is: 6,217.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,911.36 : 19,365.21 = 4,145.14 : x
  2. Step 2: Convert to fraction form
    12,911.36/19,365.21 = 4,145.14/x
  3. Step 3: Cross multiply
    12,911.36x = 19,365.21 × 4,145.14
  4. Step 4: Simplify right side
    12,911.36x = 80,271,506.58
  5. Step 5: Solve for x
    x = 80,271,506.58/12,911.36
  6. Step 6: Final answer
    x = 6,217.12

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Double scale
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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.