Home / 13,830.56-20,735.21-7,159.91

Finding the Fourth Proportional to 13,830.56, 20,735.21 and 7,159.91

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Solution

The fourth proportional to 13,830.56, 20,735.21 and 7,159.91 is: 10,734.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.56 : 20,735.21 = 7,159.91 : x
  2. Step 2: Convert to fraction form
    13,830.56/20,735.21 = 7,159.91/x
  3. Step 3: Cross multiply
    13,830.56x = 20,735.21 × 7,159.91
  4. Step 4: Simplify right side
    13,830.56x = 148,462,097.96
  5. Step 5: Solve for x
    x = 148,462,097.96/13,830.56
  6. Step 6: Final answer
    x = 10,734.36

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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.