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Finding the Fourth Proportional to 19,239.88, 28,862.71 and 6,757.71

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Solution

The fourth proportional to 19,239.88, 28,862.71 and 6,757.71 is: 10,137.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,239.88 : 28,862.71 = 6,757.71 : x
  2. Step 2: Convert to fraction form
    19,239.88/28,862.71 = 6,757.71/x
  3. Step 3: Cross multiply
    19,239.88x = 28,862.71 × 6,757.71
  4. Step 4: Simplify right side
    19,239.88x = 195,045,804.81
  5. Step 5: Solve for x
    x = 195,045,804.81/19,239.88
  6. Step 6: Final answer
    x = 10,137.58

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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.