Home / 12,426.37-17,165.60-9,905.17

Finding the Fourth Proportional to 12,426.37, 17,165.60 and 9,905.17

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Solution

The fourth proportional to 12,426.37, 17,165.60 and 9,905.17 is: 13,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.37 : 17,165.60 = 9,905.17 : x
  2. Step 2: Convert to fraction form
    12,426.37/17,165.60 = 9,905.17/x
  3. Step 3: Cross multiply
    12,426.37x = 17,165.60 × 9,905.17
  4. Step 4: Simplify right side
    12,426.37x = 170,028,186.15
  5. Step 5: Solve for x
    x = 170,028,186.15/12,426.37
  6. Step 6: Final answer
    x = 13,682.85

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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.