Home / 18,719.04-28,078.48-4,868

Finding the Fourth Proportional to 18,719.04, 28,078.48 and 4,868

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Solution

The fourth proportional to 18,719.04, 28,078.48 and 4,868 is: 7,301.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,719.04 : 28,078.48 = 4,868 : x
  2. Step 2: Convert to fraction form
    18,719.04/28,078.48 = 4,868/x
  3. Step 3: Cross multiply
    18,719.04x = 28,078.48 × 4,868
  4. Step 4: Simplify right side
    18,719.04x = 136,686,040.64
  5. Step 5: Solve for x
    x = 136,686,040.64/18,719.04
  6. Step 6: Final answer
    x = 7,301.98

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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.