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Finding the Fourth Proportional to 21,326.32, 31,975.77 and 8,854.95

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Solution

The fourth proportional to 21,326.32, 31,975.77 and 8,854.95 is: 13,276.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.32 : 31,975.77 = 8,854.95 : x
  2. Step 2: Convert to fraction form
    21,326.32/31,975.77 = 8,854.95/x
  3. Step 3: Cross multiply
    21,326.32x = 31,975.77 × 8,854.95
  4. Step 4: Simplify right side
    21,326.32x = 283,143,844.56
  5. Step 5: Solve for x
    x = 283,143,844.56/21,326.32
  6. Step 6: Final answer
    x = 13,276.74

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.