Home / 19,141.84-28,714.40-5,290.80

Finding the Fourth Proportional to 19,141.84, 28,714.40 and 5,290.80

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Solution

The fourth proportional to 19,141.84, 28,714.40 and 5,290.80 is: 7,936.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,141.84 : 28,714.40 = 5,290.80 : x
  2. Step 2: Convert to fraction form
    19,141.84/28,714.40 = 5,290.80/x
  3. Step 3: Cross multiply
    19,141.84x = 28,714.40 × 5,290.80
  4. Step 4: Simplify right side
    19,141.84x = 151,922,147.52
  5. Step 5: Solve for x
    x = 151,922,147.52/19,141.84
  6. Step 6: Final answer
    x = 7,936.65

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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.