Home / 20,457.63-28,230.24-11,505.03

Finding the Fourth Proportional to 20,457.63, 28,230.24 and 11,505.03

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Solution

The fourth proportional to 20,457.63, 28,230.24 and 11,505.03 is: 15,876.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457.63 : 28,230.24 = 11,505.03 : x
  2. Step 2: Convert to fraction form
    20,457.63/28,230.24 = 11,505.03/x
  3. Step 3: Cross multiply
    20,457.63x = 28,230.24 × 11,505.03
  4. Step 4: Simplify right side
    20,457.63x = 324,789,758.11
  5. Step 5: Solve for x
    x = 324,789,758.11/20,457.63
  6. Step 6: Final answer
    x = 15,876.22

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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.