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Finding the Fourth Proportional to 12,621, 18,933.93 and 5,695.50

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Solution

The fourth proportional to 12,621, 18,933.93 and 5,695.50 is: 8,544.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,621 : 18,933.93 = 5,695.50 : x
  2. Step 2: Convert to fraction form
    12,621/18,933.93 = 5,695.50/x
  3. Step 3: Cross multiply
    12,621x = 18,933.93 × 5,695.50
  4. Step 4: Simplify right side
    12,621x = 107,838,198.32
  5. Step 5: Solve for x
    x = 107,838,198.32/12,621
  6. Step 6: Final answer
    x = 8,544.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.