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Finding the Fourth Proportional to 12,423, 18,634.80 and 4,630.28

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Solution

The fourth proportional to 12,423, 18,634.80 and 4,630.28 is: 6,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,423 : 18,634.80 = 4,630.28 : x
  2. Step 2: Convert to fraction form
    12,423/18,634.80 = 4,630.28/x
  3. Step 3: Cross multiply
    12,423x = 18,634.80 × 4,630.28
  4. Step 4: Simplify right side
    12,423x = 86,284,341.74
  5. Step 5: Solve for x
    x = 86,284,341.74/12,423
  6. Step 6: Final answer
    x = 6,945.53

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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.