Home / 27,987.75-41,981.95-11,975.12

Finding the Fourth Proportional to 27,987.75, 41,981.95 and 11,975.12

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Solution

The fourth proportional to 27,987.75, 41,981.95 and 11,975.12 is: 17,962.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.75 : 41,981.95 = 11,975.12 : x
  2. Step 2: Convert to fraction form
    27,987.75/41,981.95 = 11,975.12/x
  3. Step 3: Cross multiply
    27,987.75x = 41,981.95 × 11,975.12
  4. Step 4: Simplify right side
    27,987.75x = 502,738,666.14
  5. Step 5: Solve for x
    x = 502,738,666.14/27,987.75
  6. Step 6: Final answer
    x = 17,962.81

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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.