Home / 14,171.90-21,260.10-4,812.80

Finding the Fourth Proportional to 14,171.90, 21,260.10 and 4,812.80

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Solution

The fourth proportional to 14,171.90, 21,260.10 and 4,812.80 is: 7,219.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,171.90 : 21,260.10 = 4,812.80 : x
  2. Step 2: Convert to fraction form
    14,171.90/21,260.10 = 4,812.80/x
  3. Step 3: Cross multiply
    14,171.90x = 21,260.10 × 4,812.80
  4. Step 4: Simplify right side
    14,171.90x = 102,320,609.28
  5. Step 5: Solve for x
    x = 102,320,609.28/14,171.90
  6. Step 6: Final answer
    x = 7,219.96

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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.