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Finding the Fourth Proportional to 16,488.16, 22,773.36 and 12,684.40

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Solution

The fourth proportional to 16,488.16, 22,773.36 and 12,684.40 is: 17,519.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,488.16 : 22,773.36 = 12,684.40 : x
  2. Step 2: Convert to fraction form
    16,488.16/22,773.36 = 12,684.40/x
  3. Step 3: Cross multiply
    16,488.16x = 22,773.36 × 12,684.40
  4. Step 4: Simplify right side
    16,488.16x = 288,866,407.58
  5. Step 5: Solve for x
    x = 288,866,407.58/16,488.16
  6. Step 6: Final answer
    x = 17,519.63

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