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Finding the Fourth Proportional to 11,998.58, 16,557.93 and 6,621.07

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Solution

The fourth proportional to 11,998.58, 16,557.93 and 6,621.07 is: 9,137.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,998.58 : 16,557.93 = 6,621.07 : x
  2. Step 2: Convert to fraction form
    11,998.58/16,557.93 = 6,621.07/x
  3. Step 3: Cross multiply
    11,998.58x = 16,557.93 × 6,621.07
  4. Step 4: Simplify right side
    11,998.58x = 109,631,124.08
  5. Step 5: Solve for x
    x = 109,631,124.08/11,998.58
  6. Step 6: Final answer
    x = 9,137.01

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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.