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Finding the Fourth Proportional to 15,673.76, 21,629.04 and 8,600.03

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Solution

The fourth proportional to 15,673.76, 21,629.04 and 8,600.03 is: 11,867.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.76 : 21,629.04 = 8,600.03 : x
  2. Step 2: Convert to fraction form
    15,673.76/21,629.04 = 8,600.03/x
  3. Step 3: Cross multiply
    15,673.76x = 21,629.04 × 8,600.03
  4. Step 4: Simplify right side
    15,673.76x = 186,010,284.73
  5. Step 5: Solve for x
    x = 186,010,284.73/15,673.76
  6. Step 6: Final answer
    x = 11,867.63

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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.