Home / 14,079.32-21,115.64-4,719.68

Finding the Fourth Proportional to 14,079.32, 21,115.64 and 4,719.68

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Solution

The fourth proportional to 14,079.32, 21,115.64 and 4,719.68 is: 7,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.32 : 21,115.64 = 4,719.68 : x
  2. Step 2: Convert to fraction form
    14,079.32/21,115.64 = 4,719.68/x
  3. Step 3: Cross multiply
    14,079.32x = 21,115.64 × 4,719.68
  4. Step 4: Simplify right side
    14,079.32x = 99,659,063.80
  5. Step 5: Solve for x
    x = 99,659,063.80/14,079.32
  6. Step 6: Final answer
    x = 7,078.40

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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.