Home / 40,828.80-61,243.20-13,129.60

Finding the Fourth Proportional to 40,828.80, 61,243.20 and 13,129.60

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Solution

The fourth proportional to 40,828.80, 61,243.20 and 13,129.60 is: 19,694.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,828.80 : 61,243.20 = 13,129.60 : x
  2. Step 2: Convert to fraction form
    40,828.80/61,243.20 = 13,129.60/x
  3. Step 3: Cross multiply
    40,828.80x = 61,243.20 × 13,129.60
  4. Step 4: Simplify right side
    40,828.80x = 804,098,718.72
  5. Step 5: Solve for x
    x = 804,098,718.72/40,828.80
  6. Step 6: Final answer
    x = 19,694.40

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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.