Home / 13,158.28-19,720.41-9,845.38

Finding the Fourth Proportional to 13,158.28, 19,720.41 and 9,845.38

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Solution

The fourth proportional to 13,158.28, 19,720.41 and 9,845.38 is: 14,755.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158.28 : 19,720.41 = 9,845.38 : x
  2. Step 2: Convert to fraction form
    13,158.28/19,720.41 = 9,845.38/x
  3. Step 3: Cross multiply
    13,158.28x = 19,720.41 × 9,845.38
  4. Step 4: Simplify right side
    13,158.28x = 194,154,930.21
  5. Step 5: Solve for x
    x = 194,154,930.21/13,158.28
  6. Step 6: Final answer
    x = 14,755.34

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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.