Home / 15,621.76-21,557.96-8,548.16

Finding the Fourth Proportional to 15,621.76, 21,557.96 and 8,548.16

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Solution

The fourth proportional to 15,621.76, 21,557.96 and 8,548.16 is: 11,796.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.76 : 21,557.96 = 8,548.16 : x
  2. Step 2: Convert to fraction form
    15,621.76/21,557.96 = 8,548.16/x
  3. Step 3: Cross multiply
    15,621.76x = 21,557.96 × 8,548.16
  4. Step 4: Simplify right side
    15,621.76x = 184,280,891.35
  5. Step 5: Solve for x
    x = 184,280,891.35/15,621.76
  6. Step 6: Final answer
    x = 11,796.42

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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.