Home / 21,720.56-29,984.58-16,344.99

Finding the Fourth Proportional to 21,720.56, 29,984.58 and 16,344.99

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Solution

The fourth proportional to 21,720.56, 29,984.58 and 16,344.99 is: 22,563.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720.56 : 29,984.58 = 16,344.99 : x
  2. Step 2: Convert to fraction form
    21,720.56/29,984.58 = 16,344.99/x
  3. Step 3: Cross multiply
    21,720.56x = 29,984.58 × 16,344.99
  4. Step 4: Simplify right side
    21,720.56x = 490,097,660.25
  5. Step 5: Solve for x
    x = 490,097,660.25/21,720.56
  6. Step 6: Final answer
    x = 22,563.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.