Home / 18,454.48-27,679.56-5,128.50

Finding the Fourth Proportional to 18,454.48, 27,679.56 and 5,128.50

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Solution

The fourth proportional to 18,454.48, 27,679.56 and 5,128.50 is: 7,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,454.48 : 27,679.56 = 5,128.50 : x
  2. Step 2: Convert to fraction form
    18,454.48/27,679.56 = 5,128.50/x
  3. Step 3: Cross multiply
    18,454.48x = 27,679.56 × 5,128.50
  4. Step 4: Simplify right side
    18,454.48x = 141,954,623.46
  5. Step 5: Solve for x
    x = 141,954,623.46/18,454.48
  6. Step 6: Final answer
    x = 7,692.15

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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.