Home / 15,621.89-21,558.21-8,548.31

Finding the Fourth Proportional to 15,621.89, 21,558.21 and 8,548.31

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Solution

The fourth proportional to 15,621.89, 21,558.21 and 8,548.31 is: 11,796.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.89 : 21,558.21 = 8,548.31 : x
  2. Step 2: Convert to fraction form
    15,621.89/21,558.21 = 8,548.31/x
  3. Step 3: Cross multiply
    15,621.89x = 21,558.21 × 8,548.31
  4. Step 4: Simplify right side
    15,621.89x = 184,286,308.01
  5. Step 5: Solve for x
    x = 184,286,308.01/15,621.89
  6. Step 6: Final answer
    x = 11,796.67

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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.