Home / 13,558.08-18,710.20-7,896.20

Finding the Fourth Proportional to 13,558.08, 18,710.20 and 7,896.20

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Solution

The fourth proportional to 13,558.08, 18,710.20 and 7,896.20 is: 10,896.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,558.08 : 18,710.20 = 7,896.20 : x
  2. Step 2: Convert to fraction form
    13,558.08/18,710.20 = 7,896.20/x
  3. Step 3: Cross multiply
    13,558.08x = 18,710.20 × 7,896.20
  4. Step 4: Simplify right side
    13,558.08x = 147,739,481.24
  5. Step 5: Solve for x
    x = 147,739,481.24/13,558.08
  6. Step 6: Final answer
    x = 10,896.78

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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.