Home / 27,983.94-38,619.45-15,408.90

Finding the Fourth Proportional to 27,983.94, 38,619.45 and 15,408.90

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Solution

The fourth proportional to 27,983.94, 38,619.45 and 15,408.90 is: 21,265.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,983.94 : 38,619.45 = 15,408.90 : x
  2. Step 2: Convert to fraction form
    27,983.94/38,619.45 = 15,408.90/x
  3. Step 3: Cross multiply
    27,983.94x = 38,619.45 × 15,408.90
  4. Step 4: Simplify right side
    27,983.94x = 595,083,243.11
  5. Step 5: Solve for x
    x = 595,083,243.11/27,983.94
  6. Step 6: Final answer
    x = 21,265.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.