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Finding the Fourth Proportional to 12,649.48, 18,959.42 and 9,519.44

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Solution

The fourth proportional to 12,649.48, 18,959.42 and 9,519.44 is: 14,268.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,649.48 : 18,959.42 = 9,519.44 : x
  2. Step 2: Convert to fraction form
    12,649.48/18,959.42 = 9,519.44/x
  3. Step 3: Cross multiply
    12,649.48x = 18,959.42 × 9,519.44
  4. Step 4: Simplify right side
    12,649.48x = 180,483,061.12
  5. Step 5: Solve for x
    x = 180,483,061.12/12,649.48
  6. Step 6: Final answer
    x = 14,268.02

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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.