Home / 19,772.64-27,280.80-11,811.96

Finding the Fourth Proportional to 19,772.64, 27,280.80 and 11,811.96

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Solution

The fourth proportional to 19,772.64, 27,280.80 and 11,811.96 is: 16,297.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,772.64 : 27,280.80 = 11,811.96 : x
  2. Step 2: Convert to fraction form
    19,772.64/27,280.80 = 11,811.96/x
  3. Step 3: Cross multiply
    19,772.64x = 27,280.80 × 11,811.96
  4. Step 4: Simplify right side
    19,772.64x = 322,239,718.37
  5. Step 5: Solve for x
    x = 322,239,718.37/19,772.64
  6. Step 6: Final answer
    x = 16,297.25

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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.