Home / 15,621.88-21,558.19-8,548.30

Finding the Fourth Proportional to 15,621.88, 21,558.19 and 8,548.30

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Solution

The fourth proportional to 15,621.88, 21,558.19 and 8,548.30 is: 11,796.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.88 : 21,558.19 = 8,548.30 : x
  2. Step 2: Convert to fraction form
    15,621.88/21,558.19 = 8,548.30/x
  3. Step 3: Cross multiply
    15,621.88x = 21,558.19 × 8,548.30
  4. Step 4: Simplify right side
    15,621.88x = 184,285,767.79
  5. Step 5: Solve for x
    x = 184,285,767.79/15,621.88
  6. Step 6: Final answer
    x = 11,796.65

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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.