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Finding the Fourth Proportional to 12,415.83, 18,619.78 and 4,094.29

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Solution

The fourth proportional to 12,415.83, 18,619.78 and 4,094.29 is: 6,140.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.83 : 18,619.78 = 4,094.29 : x
  2. Step 2: Convert to fraction form
    12,415.83/18,619.78 = 4,094.29/x
  3. Step 3: Cross multiply
    12,415.83x = 18,619.78 × 4,094.29
  4. Step 4: Simplify right side
    12,415.83x = 76,234,779.06
  5. Step 5: Solve for x
    x = 76,234,779.06/12,415.83
  6. Step 6: Final answer
    x = 6,140.13

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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.