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Finding the Fourth Proportional to 12,578.66, 18,870.36 and 6,005.32

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Solution

The fourth proportional to 12,578.66, 18,870.36 and 6,005.32 is: 9,009.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,578.66 : 18,870.36 = 6,005.32 : x
  2. Step 2: Convert to fraction form
    12,578.66/18,870.36 = 6,005.32/x
  3. Step 3: Cross multiply
    12,578.66x = 18,870.36 × 6,005.32
  4. Step 4: Simplify right side
    12,578.66x = 113,322,550.32
  5. Step 5: Solve for x
    x = 113,322,550.32/12,578.66
  6. Step 6: Final answer
    x = 9,009.11

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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.