Home / 20,260.26-27,959.40-11,307.60

Finding the Fourth Proportional to 20,260.26, 27,959.40 and 11,307.60

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Solution

The fourth proportional to 20,260.26, 27,959.40 and 11,307.60 is: 15,604.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.26 : 27,959.40 = 11,307.60 : x
  2. Step 2: Convert to fraction form
    20,260.26/27,959.40 = 11,307.60/x
  3. Step 3: Cross multiply
    20,260.26x = 27,959.40 × 11,307.60
  4. Step 4: Simplify right side
    20,260.26x = 316,153,711.44
  5. Step 5: Solve for x
    x = 316,153,711.44/20,260.26
  6. Step 6: Final answer
    x = 15,604.62

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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.