Home / 13,905.90-19,187.96-7,856.01

Finding the Fourth Proportional to 13,905.90, 19,187.96 and 7,856.01

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Solution

The fourth proportional to 13,905.90, 19,187.96 and 7,856.01 is: 10,840.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.90 : 19,187.96 = 7,856.01 : x
  2. Step 2: Convert to fraction form
    13,905.90/19,187.96 = 7,856.01/x
  3. Step 3: Cross multiply
    13,905.90x = 19,187.96 × 7,856.01
  4. Step 4: Simplify right side
    13,905.90x = 150,740,766.36
  5. Step 5: Solve for x
    x = 150,740,766.36/13,905.90
  6. Step 6: Final answer
    x = 10,840.06

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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.