Home / 14,121.32-21,184.74-4,260.20

Finding the Fourth Proportional to 14,121.32, 21,184.74 and 4,260.20

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Solution

The fourth proportional to 14,121.32, 21,184.74 and 4,260.20 is: 6,391.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.32 : 21,184.74 = 4,260.20 : x
  2. Step 2: Convert to fraction form
    14,121.32/21,184.74 = 4,260.20/x
  3. Step 3: Cross multiply
    14,121.32x = 21,184.74 × 4,260.20
  4. Step 4: Simplify right side
    14,121.32x = 90,251,229.35
  5. Step 5: Solve for x
    x = 90,251,229.35/14,121.32
  6. Step 6: Final answer
    x = 6,391.13

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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.