Home / 20,954.26-28,930.53-13,008.16

Finding the Fourth Proportional to 20,954.26, 28,930.53 and 13,008.16

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Solution

The fourth proportional to 20,954.26, 28,930.53 and 13,008.16 is: 17,959.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,954.26 : 28,930.53 = 13,008.16 : x
  2. Step 2: Convert to fraction form
    20,954.26/28,930.53 = 13,008.16/x
  3. Step 3: Cross multiply
    20,954.26x = 28,930.53 × 13,008.16
  4. Step 4: Simplify right side
    20,954.26x = 376,332,963.12
  5. Step 5: Solve for x
    x = 376,332,963.12/20,954.26
  6. Step 6: Final answer
    x = 17,959.74

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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.