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Finding the Fourth Proportional to 19,216.88, 28,773.40 and 9,963.44

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Solution

The fourth proportional to 19,216.88, 28,773.40 and 9,963.44 is: 14,918.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,216.88 : 28,773.40 = 9,963.44 : x
  2. Step 2: Convert to fraction form
    19,216.88/28,773.40 = 9,963.44/x
  3. Step 3: Cross multiply
    19,216.88x = 28,773.40 × 9,963.44
  4. Step 4: Simplify right side
    19,216.88x = 286,682,044.50
  5. Step 5: Solve for x
    x = 286,682,044.50/19,216.88
  6. Step 6: Final answer
    x = 14,918.24

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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.