Home / 40,815.04-61,216.80-13,109.44

Finding the Fourth Proportional to 40,815.04, 61,216.80 and 13,109.44

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Solution

The fourth proportional to 40,815.04, 61,216.80 and 13,109.44 is: 19,662.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,815.04 : 61,216.80 = 13,109.44 : x
  2. Step 2: Convert to fraction form
    40,815.04/61,216.80 = 13,109.44/x
  3. Step 3: Cross multiply
    40,815.04x = 61,216.80 × 13,109.44
  4. Step 4: Simplify right side
    40,815.04x = 802,517,966.59
  5. Step 5: Solve for x
    x = 802,517,966.59/40,815.04
  6. Step 6: Final answer
    x = 19,662.31

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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.