Home / 15,621.80-21,558.21-8,548.28

Finding the Fourth Proportional to 15,621.80, 21,558.21 and 8,548.28

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Solution

The fourth proportional to 15,621.80, 21,558.21 and 8,548.28 is: 11,796.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.80 : 21,558.21 = 8,548.28 : x
  2. Step 2: Convert to fraction form
    15,621.80/21,558.21 = 8,548.28/x
  3. Step 3: Cross multiply
    15,621.80x = 21,558.21 × 8,548.28
  4. Step 4: Simplify right side
    15,621.80x = 184,285,615.38
  5. Step 5: Solve for x
    x = 184,285,615.38/15,621.80
  6. Step 6: Final answer
    x = 11,796.70

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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.