Home / 13,128.60-19,695.30-5,338.20

Finding the Fourth Proportional to 13,128.60, 19,695.30 and 5,338.20

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Solution

The fourth proportional to 13,128.60, 19,695.30 and 5,338.20 is: 8,008.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.60 : 19,695.30 = 5,338.20 : x
  2. Step 2: Convert to fraction form
    13,128.60/19,695.30 = 5,338.20/x
  3. Step 3: Cross multiply
    13,128.60x = 19,695.30 × 5,338.20
  4. Step 4: Simplify right side
    13,128.60x = 105,137,450.46
  5. Step 5: Solve for x
    x = 105,137,450.46/13,128.60
  6. Step 6: Final answer
    x = 8,008.28

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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.