Home / 27,911.81-41,874.55-13,878.45

Finding the Fourth Proportional to 27,911.81, 41,874.55 and 13,878.45

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Solution

The fourth proportional to 27,911.81, 41,874.55 and 13,878.45 is: 20,821.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,911.81 : 41,874.55 = 13,878.45 : x
  2. Step 2: Convert to fraction form
    27,911.81/41,874.55 = 13,878.45/x
  3. Step 3: Cross multiply
    27,911.81x = 41,874.55 × 13,878.45
  4. Step 4: Simplify right side
    27,911.81x = 581,153,813.75
  5. Step 5: Solve for x
    x = 581,153,813.75/27,911.81
  6. Step 6: Final answer
    x = 20,821.07

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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.