Home / 43,590.08-65,376.51-11,991.99

Finding the Fourth Proportional to 43,590.08, 65,376.51 and 11,991.99

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Solution

The fourth proportional to 43,590.08, 65,376.51 and 11,991.99 is: 17,985.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,590.08 : 65,376.51 = 11,991.99 : x
  2. Step 2: Convert to fraction form
    43,590.08/65,376.51 = 11,991.99/x
  3. Step 3: Cross multiply
    43,590.08x = 65,376.51 × 11,991.99
  4. Step 4: Simplify right side
    43,590.08x = 783,994,454.15
  5. Step 5: Solve for x
    x = 783,994,454.15/43,590.08
  6. Step 6: Final answer
    x = 17,985.62

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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.