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Finding the Fourth Proportional to 15,798.90, 21,801.15 and 9,747.44

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Solution

The fourth proportional to 15,798.90, 21,801.15 and 9,747.44 is: 13,450.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,798.90 : 21,801.15 = 9,747.44 : x
  2. Step 2: Convert to fraction form
    15,798.90/21,801.15 = 9,747.44/x
  3. Step 3: Cross multiply
    15,798.90x = 21,801.15 × 9,747.44
  4. Step 4: Simplify right side
    15,798.90x = 212,505,292.55
  5. Step 5: Solve for x
    x = 212,505,292.55/15,798.90
  6. Step 6: Final answer
    x = 13,450.64

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1.5x scale

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.