Home / 21,379.20-32,025.60-14,812.80

Finding the Fourth Proportional to 21,379.20, 32,025.60 and 14,812.80

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Solution

The fourth proportional to 21,379.20, 32,025.60 and 14,812.80 is: 22,189.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,379.20 : 32,025.60 = 14,812.80 : x
  2. Step 2: Convert to fraction form
    21,379.20/32,025.60 = 14,812.80/x
  3. Step 3: Cross multiply
    21,379.20x = 32,025.60 × 14,812.80
  4. Step 4: Simplify right side
    21,379.20x = 474,388,807.68
  5. Step 5: Solve for x
    x = 474,388,807.68/21,379.20
  6. Step 6: Final answer
    x = 22,189.27

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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.