Home / 14,520.18-20,028.30-11,531.28

Finding the Fourth Proportional to 14,520.18, 20,028.30 and 11,531.28

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Solution

The fourth proportional to 14,520.18, 20,028.30 and 11,531.28 is: 15,905.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.18 : 20,028.30 = 11,531.28 : x
  2. Step 2: Convert to fraction form
    14,520.18/20,028.30 = 11,531.28/x
  3. Step 3: Cross multiply
    14,520.18x = 20,028.30 × 11,531.28
  4. Step 4: Simplify right side
    14,520.18x = 230,951,935.22
  5. Step 5: Solve for x
    x = 230,951,935.22/14,520.18
  6. Step 6: Final answer
    x = 15,905.58

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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.