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Finding the Fourth Proportional to 12,423.78, 18,630.18 and 6,579

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Solution

The fourth proportional to 12,423.78, 18,630.18 and 6,579 is: 9,865.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423.78 : 18,630.18 = 6,579 : x
  2. Step 2: Convert to fraction form
    12,423.78/18,630.18 = 6,579/x
  3. Step 3: Cross multiply
    12,423.78x = 18,630.18 × 6,579
  4. Step 4: Simplify right side
    12,423.78x = 122,567,954.22
  5. Step 5: Solve for x
    x = 122,567,954.22/12,423.78
  6. Step 6: Final answer
    x = 9,865.59

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1.5x scale

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.