Home / 12,743.36-19,114.64-3,509.28

Finding the Fourth Proportional to 12,743.36, 19,114.64 and 3,509.28

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Solution

The fourth proportional to 12,743.36, 19,114.64 and 3,509.28 is: 5,263.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.36 : 19,114.64 = 3,509.28 : x
  2. Step 2: Convert to fraction form
    12,743.36/19,114.64 = 3,509.28/x
  3. Step 3: Cross multiply
    12,743.36x = 19,114.64 × 3,509.28
  4. Step 4: Simplify right side
    12,743.36x = 67,078,623.86
  5. Step 5: Solve for x
    x = 67,078,623.86/12,743.36
  6. Step 6: Final answer
    x = 5,263.81

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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.