Home / 27,107.17-37,443.63-20,811.54

Finding the Fourth Proportional to 27,107.17, 37,443.63 and 20,811.54

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Solution

The fourth proportional to 27,107.17, 37,443.63 and 20,811.54 is: 28,747.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,107.17 : 37,443.63 = 20,811.54 : x
  2. Step 2: Convert to fraction form
    27,107.17/37,443.63 = 20,811.54/x
  3. Step 3: Cross multiply
    27,107.17x = 37,443.63 × 20,811.54
  4. Step 4: Simplify right side
    27,107.17x = 779,259,603.49
  5. Step 5: Solve for x
    x = 779,259,603.49/27,107.17
  6. Step 6: Final answer
    x = 28,747.36

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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.