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Finding the Fourth Proportional to 15,673.62, 21,628.90 and 8,599.90

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Solution

The fourth proportional to 15,673.62, 21,628.90 and 8,599.90 is: 11,867.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,673.62 : 21,628.90 = 8,599.90 : x
  2. Step 2: Convert to fraction form
    15,673.62/21,628.90 = 8,599.90/x
  3. Step 3: Cross multiply
    15,673.62x = 21,628.90 × 8,599.90
  4. Step 4: Simplify right side
    15,673.62x = 186,006,377.11
  5. Step 5: Solve for x
    x = 186,006,377.11/15,673.62
  6. Step 6: Final answer
    x = 11,867.48

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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.