Home / 11,316.86-16,972.05-3,919.40

Finding the Fourth Proportional to 11,316.86, 16,972.05 and 3,919.40

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Solution

The fourth proportional to 11,316.86, 16,972.05 and 3,919.40 is: 5,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,316.86 : 16,972.05 = 3,919.40 : x
  2. Step 2: Convert to fraction form
    11,316.86/16,972.05 = 3,919.40/x
  3. Step 3: Cross multiply
    11,316.86x = 16,972.05 × 3,919.40
  4. Step 4: Simplify right side
    11,316.86x = 66,520,252.77
  5. Step 5: Solve for x
    x = 66,520,252.77/11,316.86
  6. Step 6: Final answer
    x = 5,877.98

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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.