Home / 12,816.90-19,228.26-5,025.78

Finding the Fourth Proportional to 12,816.90, 19,228.26 and 5,025.78

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Solution

The fourth proportional to 12,816.90, 19,228.26 and 5,025.78 is: 7,539.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,816.90 : 19,228.26 = 5,025.78 : x
  2. Step 2: Convert to fraction form
    12,816.90/19,228.26 = 5,025.78/x
  3. Step 3: Cross multiply
    12,816.90x = 19,228.26 × 5,025.78
  4. Step 4: Simplify right side
    12,816.90x = 96,637,004.54
  5. Step 5: Solve for x
    x = 96,637,004.54/12,816.90
  6. Step 6: Final answer
    x = 7,539.81

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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.