Home / 14,121.70-21,182.58-4,260.99

Finding the Fourth Proportional to 14,121.70, 21,182.58 and 4,260.99

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Solution

The fourth proportional to 14,121.70, 21,182.58 and 4,260.99 is: 6,391.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.70 : 21,182.58 = 4,260.99 : x
  2. Step 2: Convert to fraction form
    14,121.70/21,182.58 = 4,260.99/x
  3. Step 3: Cross multiply
    14,121.70x = 21,182.58 × 4,260.99
  4. Step 4: Simplify right side
    14,121.70x = 90,258,761.55
  5. Step 5: Solve for x
    x = 90,258,761.55/14,121.70
  6. Step 6: Final answer
    x = 6,391.49

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Double scale
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Similar ratio
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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.