Home / 15,621.79-21,558.06-8,548.21

Finding the Fourth Proportional to 15,621.79, 21,558.06 and 8,548.21

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Solution

The fourth proportional to 15,621.79, 21,558.06 and 8,548.21 is: 11,796.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.79 : 21,558.06 = 8,548.21 : x
  2. Step 2: Convert to fraction form
    15,621.79/21,558.06 = 8,548.21/x
  3. Step 3: Cross multiply
    15,621.79x = 21,558.06 × 8,548.21
  4. Step 4: Simplify right side
    15,621.79x = 184,282,716.28
  5. Step 5: Solve for x
    x = 184,282,716.28/15,621.79
  6. Step 6: Final answer
    x = 11,796.52

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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.