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Finding the Fourth Proportional to 38,318.77, 52,879.39 and 21,551.77

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Solution

The fourth proportional to 38,318.77, 52,879.39 and 21,551.77 is: 29,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,318.77 : 52,879.39 = 21,551.77 : x
  2. Step 2: Convert to fraction form
    38,318.77/52,879.39 = 21,551.77/x
  3. Step 3: Cross multiply
    38,318.77x = 52,879.39 × 21,551.77
  4. Step 4: Simplify right side
    38,318.77x = 1,139,644,451.02
  5. Step 5: Solve for x
    x = 1,139,644,451.02/38,318.77
  6. Step 6: Final answer
    x = 29,741.15

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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.