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Finding the Fourth Proportional to 19,239.70, 28,858.09 and 6,759.84

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Solution

The fourth proportional to 19,239.70, 28,858.09 and 6,759.84 is: 10,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,239.70 : 28,858.09 = 6,759.84 : x
  2. Step 2: Convert to fraction form
    19,239.70/28,858.09 = 6,759.84/x
  3. Step 3: Cross multiply
    19,239.70x = 28,858.09 × 6,759.84
  4. Step 4: Simplify right side
    19,239.70x = 195,076,071.11
  5. Step 5: Solve for x
    x = 195,076,071.11/19,239.70
  6. Step 6: Final answer
    x = 10,139.25

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1.5x scale

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.