Home / 11,985.81-17,981.31-4,590.27

Finding the Fourth Proportional to 11,985.81, 17,981.31 and 4,590.27

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Solution

The fourth proportional to 11,985.81, 17,981.31 and 4,590.27 is: 6,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,985.81 : 17,981.31 = 4,590.27 : x
  2. Step 2: Convert to fraction form
    11,985.81/17,981.31 = 4,590.27/x
  3. Step 3: Cross multiply
    11,985.81x = 17,981.31 × 4,590.27
  4. Step 4: Simplify right side
    11,985.81x = 82,539,067.85
  5. Step 5: Solve for x
    x = 82,539,067.85/11,985.81
  6. Step 6: Final answer
    x = 6,886.40

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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.