Home / 15,621.60-21,557.88-8,548

Finding the Fourth Proportional to 15,621.60, 21,557.88 and 8,548

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Solution

The fourth proportional to 15,621.60, 21,557.88 and 8,548 is: 11,796.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,621.60 : 21,557.88 = 8,548 : x
  2. Step 2: Convert to fraction form
    15,621.60/21,557.88 = 8,548/x
  3. Step 3: Cross multiply
    15,621.60x = 21,557.88 × 8,548
  4. Step 4: Simplify right side
    15,621.60x = 184,276,758.24
  5. Step 5: Solve for x
    x = 184,276,758.24/15,621.60
  6. Step 6: Final answer
    x = 11,796.28

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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.