Home / 14,078.64-21,120.30-6,287.16

Finding the Fourth Proportional to 14,078.64, 21,120.30 and 6,287.16

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Solution

The fourth proportional to 14,078.64, 21,120.30 and 6,287.16 is: 9,431.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,078.64 : 21,120.30 = 6,287.16 : x
  2. Step 2: Convert to fraction form
    14,078.64/21,120.30 = 6,287.16/x
  3. Step 3: Cross multiply
    14,078.64x = 21,120.30 × 6,287.16
  4. Step 4: Simplify right side
    14,078.64x = 132,786,705.35
  5. Step 5: Solve for x
    x = 132,786,705.35/14,078.64
  6. Step 6: Final answer
    x = 9,431.78

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1.5x scale

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.