Home / 20,968.40-28,936.68-11,537.36

Finding the Fourth Proportional to 20,968.40, 28,936.68 and 11,537.36

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Solution

The fourth proportional to 20,968.40, 28,936.68 and 11,537.36 is: 15,921.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,968.40 : 28,936.68 = 11,537.36 : x
  2. Step 2: Convert to fraction form
    20,968.40/28,936.68 = 11,537.36/x
  3. Step 3: Cross multiply
    20,968.40x = 28,936.68 × 11,537.36
  4. Step 4: Simplify right side
    20,968.40x = 333,852,894.36
  5. Step 5: Solve for x
    x = 333,852,894.36/20,968.40
  6. Step 6: Final answer
    x = 15,921.72

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1.5x scale

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.