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Finding the Fourth Proportional to 12,415.60, 18,623.60 and 3,055.65

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Solution

The fourth proportional to 12,415.60, 18,623.60 and 3,055.65 is: 4,583.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.60 : 18,623.60 = 3,055.65 : x
  2. Step 2: Convert to fraction form
    12,415.60/18,623.60 = 3,055.65/x
  3. Step 3: Cross multiply
    12,415.60x = 18,623.60 × 3,055.65
  4. Step 4: Simplify right side
    12,415.60x = 56,907,203.34
  5. Step 5: Solve for x
    x = 56,907,203.34/12,415.60
  6. Step 6: Final answer
    x = 4,583.52

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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.