Home / 20,868.14-31,315.77-9,033.45

Finding the Fourth Proportional to 20,868.14, 31,315.77 and 9,033.45

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Solution

The fourth proportional to 20,868.14, 31,315.77 and 9,033.45 is: 13,556.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,868.14 : 31,315.77 = 9,033.45 : x
  2. Step 2: Convert to fraction form
    20,868.14/31,315.77 = 9,033.45/x
  3. Step 3: Cross multiply
    20,868.14x = 31,315.77 × 9,033.45
  4. Step 4: Simplify right side
    20,868.14x = 282,889,442.51
  5. Step 5: Solve for x
    x = 282,889,442.51/20,868.14
  6. Step 6: Final answer
    x = 13,556.05

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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.