Home / 13,427.10-20,140.65-9,927.90

Finding the Fourth Proportional to 13,427.10, 20,140.65 and 9,927.90

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Solution

The fourth proportional to 13,427.10, 20,140.65 and 9,927.90 is: 14,891.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,427.10 : 20,140.65 = 9,927.90 : x
  2. Step 2: Convert to fraction form
    13,427.10/20,140.65 = 9,927.90/x
  3. Step 3: Cross multiply
    13,427.10x = 20,140.65 × 9,927.90
  4. Step 4: Simplify right side
    13,427.10x = 199,954,359.14
  5. Step 5: Solve for x
    x = 199,954,359.14/13,427.10
  6. Step 6: Final answer
    x = 14,891.85

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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.