Home / 14,117.89-21,171.46-4,755.40

Finding the Fourth Proportional to 14,117.89, 21,171.46 and 4,755.40

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Solution

The fourth proportional to 14,117.89, 21,171.46 and 4,755.40 is: 7,131.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,117.89 : 21,171.46 = 4,755.40 : x
  2. Step 2: Convert to fraction form
    14,117.89/21,171.46 = 4,755.40/x
  3. Step 3: Cross multiply
    14,117.89x = 21,171.46 × 4,755.40
  4. Step 4: Simplify right side
    14,117.89x = 100,678,760.88
  5. Step 5: Solve for x
    x = 100,678,760.88/14,117.89
  6. Step 6: Final answer
    x = 7,131.29

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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.