Home / 11,877.40-17,827.72-5,641.60

Finding the Fourth Proportional to 11,877.40, 17,827.72 and 5,641.60

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Solution

The fourth proportional to 11,877.40, 17,827.72 and 5,641.60 is: 8,467.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.40 : 17,827.72 = 5,641.60 : x
  2. Step 2: Convert to fraction form
    11,877.40/17,827.72 = 5,641.60/x
  3. Step 3: Cross multiply
    11,877.40x = 17,827.72 × 5,641.60
  4. Step 4: Simplify right side
    11,877.40x = 100,576,865.15
  5. Step 5: Solve for x
    x = 100,576,865.15/11,877.40
  6. Step 6: Final answer
    x = 8,467.92

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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.