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Finding the Fourth Proportional to 12,662.17, 18,987.75 and 4,865.50

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Solution

The fourth proportional to 12,662.17, 18,987.75 and 4,865.50 is: 7,296.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,662.17 : 18,987.75 = 4,865.50 : x
  2. Step 2: Convert to fraction form
    12,662.17/18,987.75 = 4,865.50/x
  3. Step 3: Cross multiply
    12,662.17x = 18,987.75 × 4,865.50
  4. Step 4: Simplify right side
    12,662.17x = 92,384,897.63
  5. Step 5: Solve for x
    x = 92,384,897.63/12,662.17
  6. Step 6: Final answer
    x = 7,296.13

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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.