Home / 12,811.36-19,214.24-4,911.20

Finding the Fourth Proportional to 12,811.36, 19,214.24 and 4,911.20

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Solution

The fourth proportional to 12,811.36, 19,214.24 and 4,911.20 is: 7,365.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.36 : 19,214.24 = 4,911.20 : x
  2. Step 2: Convert to fraction form
    12,811.36/19,214.24 = 4,911.20/x
  3. Step 3: Cross multiply
    12,811.36x = 19,214.24 × 4,911.20
  4. Step 4: Simplify right side
    12,811.36x = 94,364,975.49
  5. Step 5: Solve for x
    x = 94,364,975.49/12,811.36
  6. Step 6: Final answer
    x = 7,365.73

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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.