Home / 13,815.80-19,065.80-7,528.17

Finding the Fourth Proportional to 13,815.80, 19,065.80 and 7,528.17

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Solution

The fourth proportional to 13,815.80, 19,065.80 and 7,528.17 is: 10,388.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.80 : 19,065.80 = 7,528.17 : x
  2. Step 2: Convert to fraction form
    13,815.80/19,065.80 = 7,528.17/x
  3. Step 3: Cross multiply
    13,815.80x = 19,065.80 × 7,528.17
  4. Step 4: Simplify right side
    13,815.80x = 143,530,583.59
  5. Step 5: Solve for x
    x = 143,530,583.59/13,815.80
  6. Step 6: Final answer
    x = 10,388.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.