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Finding the Fourth Proportional to 15,673.62, 21,629.76 and 8,599.86

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Solution

The fourth proportional to 15,673.62, 21,629.76 and 8,599.86 is: 11,867.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.62 : 21,629.76 = 8,599.86 : x
  2. Step 2: Convert to fraction form
    15,673.62/21,629.76 = 8,599.86/x
  3. Step 3: Cross multiply
    15,673.62x = 21,629.76 × 8,599.86
  4. Step 4: Simplify right side
    15,673.62x = 186,012,907.83
  5. Step 5: Solve for x
    x = 186,012,907.83/15,673.62
  6. Step 6: Final answer
    x = 11,867.90

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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.