Home / 19,645.79-27,120.47-12,576.33

Finding the Fourth Proportional to 19,645.79, 27,120.47 and 12,576.33

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Solution

The fourth proportional to 19,645.79, 27,120.47 and 12,576.33 is: 17,361.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,645.79 : 27,120.47 = 12,576.33 : x
  2. Step 2: Convert to fraction form
    19,645.79/27,120.47 = 12,576.33/x
  3. Step 3: Cross multiply
    19,645.79x = 27,120.47 × 12,576.33
  4. Step 4: Simplify right side
    19,645.79x = 341,075,917.59
  5. Step 5: Solve for x
    x = 341,075,917.59/19,645.79
  6. Step 6: Final answer
    x = 17,361.28

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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.