Home / 19,786.10-27,323.32-12,724.78

Finding the Fourth Proportional to 19,786.10, 27,323.32 and 12,724.78

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Solution

The fourth proportional to 19,786.10, 27,323.32 and 12,724.78 is: 17,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,786.10 : 27,323.32 = 12,724.78 : x
  2. Step 2: Convert to fraction form
    19,786.10/27,323.32 = 12,724.78/x
  3. Step 3: Cross multiply
    19,786.10x = 27,323.32 × 12,724.78
  4. Step 4: Simplify right side
    19,786.10x = 347,683,235.87
  5. Step 5: Solve for x
    x = 347,683,235.87/19,786.10
  6. Step 6: Final answer
    x = 17,572.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.