Home / 13,900.31-20,856.73-6,887.33

Finding the Fourth Proportional to 13,900.31, 20,856.73 and 6,887.33

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Solution

The fourth proportional to 13,900.31, 20,856.73 and 6,887.33 is: 10,334.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.31 : 20,856.73 = 6,887.33 : x
  2. Step 2: Convert to fraction form
    13,900.31/20,856.73 = 6,887.33/x
  3. Step 3: Cross multiply
    13,900.31x = 20,856.73 × 6,887.33
  4. Step 4: Simplify right side
    13,900.31x = 143,647,077.95
  5. Step 5: Solve for x
    x = 143,647,077.95/13,900.31
  6. Step 6: Final answer
    x = 10,334.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.