Home / 20,473.10-28,250.57-11,520.41

Finding the Fourth Proportional to 20,473.10, 28,250.57 and 11,520.41

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Solution

The fourth proportional to 20,473.10, 28,250.57 and 11,520.41 is: 15,896.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,473.10 : 28,250.57 = 11,520.41 : x
  2. Step 2: Convert to fraction form
    20,473.10/28,250.57 = 11,520.41/x
  3. Step 3: Cross multiply
    20,473.10x = 28,250.57 × 11,520.41
  4. Step 4: Simplify right side
    20,473.10x = 325,457,950.28
  5. Step 5: Solve for x
    x = 325,457,950.28/20,473.10
  6. Step 6: Final answer
    x = 15,896.86

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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.