Home / 21,899.57-32,821.61-13,999.03

Finding the Fourth Proportional to 21,899.57, 32,821.61 and 13,999.03

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Solution

The fourth proportional to 21,899.57, 32,821.61 and 13,999.03 is: 20,980.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,899.57 : 32,821.61 = 13,999.03 : x
  2. Step 2: Convert to fraction form
    21,899.57/32,821.61 = 13,999.03/x
  3. Step 3: Cross multiply
    21,899.57x = 32,821.61 × 13,999.03
  4. Step 4: Simplify right side
    21,899.57x = 459,470,550.99
  5. Step 5: Solve for x
    x = 459,470,550.99/21,899.57
  6. Step 6: Final answer
    x = 20,980.81

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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.