Home / 28,664.74-39,570.69-19,120.51

Finding the Fourth Proportional to 28,664.74, 39,570.69 and 19,120.51

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Solution

The fourth proportional to 28,664.74, 39,570.69 and 19,120.51 is: 26,395.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,664.74 : 39,570.69 = 19,120.51 : x
  2. Step 2: Convert to fraction form
    28,664.74/39,570.69 = 19,120.51/x
  3. Step 3: Cross multiply
    28,664.74x = 39,570.69 × 19,120.51
  4. Step 4: Simplify right side
    28,664.74x = 756,611,773.85
  5. Step 5: Solve for x
    x = 756,611,773.85/28,664.74
  6. Step 6: Final answer
    x = 26,395.21

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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.