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Finding the Fourth Proportional to 12,433.76, 18,656.21 and 6,589

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Solution

The fourth proportional to 12,433.76, 18,656.21 and 6,589 is: 9,886.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,433.76 : 18,656.21 = 6,589 : x
  2. Step 2: Convert to fraction form
    12,433.76/18,656.21 = 6,589/x
  3. Step 3: Cross multiply
    12,433.76x = 18,656.21 × 6,589
  4. Step 4: Simplify right side
    12,433.76x = 122,925,767.69
  5. Step 5: Solve for x
    x = 122,925,767.69/12,433.76
  6. Step 6: Final answer
    x = 9,886.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.