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Finding the Fourth Proportional to 23,489.79, 32,415.86 and 12,879.39

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Solution

The fourth proportional to 23,489.79, 32,415.86 and 12,879.39 is: 17,773.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,489.79 : 32,415.86 = 12,879.39 : x
  2. Step 2: Convert to fraction form
    23,489.79/32,415.86 = 12,879.39/x
  3. Step 3: Cross multiply
    23,489.79x = 32,415.86 × 12,879.39
  4. Step 4: Simplify right side
    23,489.79x = 417,496,503.13
  5. Step 5: Solve for x
    x = 417,496,503.13/23,489.79
  6. Step 6: Final answer
    x = 17,773.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.