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Finding the Fourth Proportional to 13,622.40, 18,796.08 and 8,030.40

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Solution

The fourth proportional to 13,622.40, 18,796.08 and 8,030.40 is: 11,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.40 : 18,796.08 = 8,030.40 : x
  2. Step 2: Convert to fraction form
    13,622.40/18,796.08 = 8,030.40/x
  3. Step 3: Cross multiply
    13,622.40x = 18,796.08 × 8,030.40
  4. Step 4: Simplify right side
    13,622.40x = 150,940,040.83
  5. Step 5: Solve for x
    x = 150,940,040.83/13,622.40
  6. Step 6: Final answer
    x = 11,080.28

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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.