Home / 12,657.36-18,987.85-3,893.01

Finding the Fourth Proportional to 12,657.36, 18,987.85 and 3,893.01

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Solution

The fourth proportional to 12,657.36, 18,987.85 and 3,893.01 is: 5,840.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,657.36 : 18,987.85 = 3,893.01 : x
  2. Step 2: Convert to fraction form
    12,657.36/18,987.85 = 3,893.01/x
  3. Step 3: Cross multiply
    12,657.36x = 18,987.85 × 3,893.01
  4. Step 4: Simplify right side
    12,657.36x = 73,919,889.93
  5. Step 5: Solve for x
    x = 73,919,889.93/12,657.36
  6. Step 6: Final answer
    x = 5,840.07

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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.