Home / 18,719.17-28,078.80-4,868.17

Finding the Fourth Proportional to 18,719.17, 28,078.80 and 4,868.17

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Solution

The fourth proportional to 18,719.17, 28,078.80 and 4,868.17 is: 7,302.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.17 : 28,078.80 = 4,868.17 : x
  2. Step 2: Convert to fraction form
    18,719.17/28,078.80 = 4,868.17/x
  3. Step 3: Cross multiply
    18,719.17x = 28,078.80 × 4,868.17
  4. Step 4: Simplify right side
    18,719.17x = 136,692,371.80
  5. Step 5: Solve for x
    x = 136,692,371.80/18,719.17
  6. Step 6: Final answer
    x = 7,302.27

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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.