Home / 15,621.97-21,558.35-8,548.45

Finding the Fourth Proportional to 15,621.97, 21,558.35 and 8,548.45

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Solution

The fourth proportional to 15,621.97, 21,558.35 and 8,548.45 is: 11,796.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.97 : 21,558.35 = 8,548.45 : x
  2. Step 2: Convert to fraction form
    15,621.97/21,558.35 = 8,548.45/x
  3. Step 3: Cross multiply
    15,621.97x = 21,558.35 × 8,548.45
  4. Step 4: Simplify right side
    15,621.97x = 184,290,477.06
  5. Step 5: Solve for x
    x = 184,290,477.06/15,621.97
  6. Step 6: Final answer
    x = 11,796.88

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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.