Home / 20,512.38-28,307.07-11,080.94

Finding the Fourth Proportional to 20,512.38, 28,307.07 and 11,080.94

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Solution

The fourth proportional to 20,512.38, 28,307.07 and 11,080.94 is: 15,291.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,512.38 : 28,307.07 = 11,080.94 : x
  2. Step 2: Convert to fraction form
    20,512.38/28,307.07 = 11,080.94/x
  3. Step 3: Cross multiply
    20,512.38x = 28,307.07 × 11,080.94
  4. Step 4: Simplify right side
    20,512.38x = 313,668,802.71
  5. Step 5: Solve for x
    x = 313,668,802.71/20,512.38
  6. Step 6: Final answer
    x = 15,291.68

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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.