Home / 20,966.72-28,941.18-13,013.60

Finding the Fourth Proportional to 20,966.72, 28,941.18 and 13,013.60

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Solution

The fourth proportional to 20,966.72, 28,941.18 and 13,013.60 is: 17,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.72 : 28,941.18 = 13,013.60 : x
  2. Step 2: Convert to fraction form
    20,966.72/28,941.18 = 13,013.60/x
  3. Step 3: Cross multiply
    20,966.72x = 28,941.18 × 13,013.60
  4. Step 4: Simplify right side
    20,966.72x = 376,628,940.05
  5. Step 5: Solve for x
    x = 376,628,940.05/20,966.72
  6. Step 6: Final answer
    x = 17,963.18

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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.