Home / 13,681.08-18,878.94-8,091

Finding the Fourth Proportional to 13,681.08, 18,878.94 and 8,091

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Solution

The fourth proportional to 13,681.08, 18,878.94 and 8,091 is: 11,165.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,681.08 : 18,878.94 = 8,091 : x
  2. Step 2: Convert to fraction form
    13,681.08/18,878.94 = 8,091/x
  3. Step 3: Cross multiply
    13,681.08x = 18,878.94 × 8,091
  4. Step 4: Simplify right side
    13,681.08x = 152,749,503.54
  5. Step 5: Solve for x
    x = 152,749,503.54/13,681.08
  6. Step 6: Final answer
    x = 11,165.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.