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Finding the Fourth Proportional to 12,759.08, 18,999.97 and 12,713

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Solution

The fourth proportional to 12,759.08, 18,999.97 and 12,713 is: 18,931.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.08 : 18,999.97 = 12,713 : x
  2. Step 2: Convert to fraction form
    12,759.08/18,999.97 = 12,713/x
  3. Step 3: Cross multiply
    12,759.08x = 18,999.97 × 12,713
  4. Step 4: Simplify right side
    12,759.08x = 241,546,618.61
  5. Step 5: Solve for x
    x = 241,546,618.61/12,759.08
  6. Step 6: Final answer
    x = 18,931.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.