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Finding the Fourth Proportional to 23,985.76, 35,989.02 and 12,879.48

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Solution

The fourth proportional to 23,985.76, 35,989.02 and 12,879.48 is: 19,324.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,985.76 : 35,989.02 = 12,879.48 : x
  2. Step 2: Convert to fraction form
    23,985.76/35,989.02 = 12,879.48/x
  3. Step 3: Cross multiply
    23,985.76x = 35,989.02 × 12,879.48
  4. Step 4: Simplify right side
    23,985.76x = 463,519,863.31
  5. Step 5: Solve for x
    x = 463,519,863.31/23,985.76
  6. Step 6: Final answer
    x = 19,324.79

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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.