Home / 11,919.13-17,877.90-4,897.31

Finding the Fourth Proportional to 11,919.13, 17,877.90 and 4,897.31

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Solution

The fourth proportional to 11,919.13, 17,877.90 and 4,897.31 is: 7,345.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,919.13 : 17,877.90 = 4,897.31 : x
  2. Step 2: Convert to fraction form
    11,919.13/17,877.90 = 4,897.31/x
  3. Step 3: Cross multiply
    11,919.13x = 17,877.90 × 4,897.31
  4. Step 4: Simplify right side
    11,919.13x = 87,553,618.45
  5. Step 5: Solve for x
    x = 87,553,618.45/11,919.13
  6. Step 6: Final answer
    x = 7,345.64

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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.