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Finding the Fourth Proportional to 27,987.84, 41,981.76 and 26,277.12

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Solution

The fourth proportional to 27,987.84, 41,981.76 and 26,277.12 is: 39,415.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,987.84 : 41,981.76 = 26,277.12 : x
  2. Step 2: Convert to fraction form
    27,987.84/41,981.76 = 26,277.12/x
  3. Step 3: Cross multiply
    27,987.84x = 41,981.76 × 26,277.12
  4. Step 4: Simplify right side
    27,987.84x = 1,103,159,745.33
  5. Step 5: Solve for x
    x = 1,103,159,745.33/27,987.84
  6. Step 6: Final answer
    x = 39,415.68

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1.5x scale

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.