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Finding the Fourth Proportional to 13,483.98, 20,326.94 and 12,580.82

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Solution

The fourth proportional to 13,483.98, 20,326.94 and 12,580.82 is: 18,965.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,483.98 : 20,326.94 = 12,580.82 : x
  2. Step 2: Convert to fraction form
    13,483.98/20,326.94 = 12,580.82/x
  3. Step 3: Cross multiply
    13,483.98x = 20,326.94 × 12,580.82
  4. Step 4: Simplify right side
    13,483.98x = 255,729,573.29
  5. Step 5: Solve for x
    x = 255,729,573.29/13,483.98
  6. Step 6: Final answer
    x = 18,965.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.