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Finding the Fourth Proportional to 13,989.44, 19,297.08 and 9,021.44

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Solution

The fourth proportional to 13,989.44, 19,297.08 and 9,021.44 is: 12,444.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.44 : 19,297.08 = 9,021.44 : x
  2. Step 2: Convert to fraction form
    13,989.44/19,297.08 = 9,021.44/x
  3. Step 3: Cross multiply
    13,989.44x = 19,297.08 × 9,021.44
  4. Step 4: Simplify right side
    13,989.44x = 174,087,449.40
  5. Step 5: Solve for x
    x = 174,087,449.40/13,989.44
  6. Step 6: Final answer
    x = 12,444.20

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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.