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Finding the Fourth Proportional to 13,494.90, 18,622.97 and 7,445.00

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Solution

The fourth proportional to 13,494.90, 18,622.97 and 7,445.00 is: 10,274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,494.90 : 18,622.97 = 7,445.00 : x
  2. Step 2: Convert to fraction form
    13,494.90/18,622.97 = 7,445.00/x
  3. Step 3: Cross multiply
    13,494.90x = 18,622.97 × 7,445.00
  4. Step 4: Simplify right side
    13,494.90x = 138,647,881.31
  5. Step 5: Solve for x
    x = 138,647,881.31/13,494.90
  6. Step 6: Final answer
    x = 10,274.09

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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.