Home / 13,766.95-18,999.57-8,729.32

Finding the Fourth Proportional to 13,766.95, 18,999.57 and 8,729.32

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Solution

The fourth proportional to 13,766.95, 18,999.57 and 8,729.32 is: 12,047.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,766.95 : 18,999.57 = 8,729.32 : x
  2. Step 2: Convert to fraction form
    13,766.95/18,999.57 = 8,729.32/x
  3. Step 3: Cross multiply
    13,766.95x = 18,999.57 × 8,729.32
  4. Step 4: Simplify right side
    13,766.95x = 165,853,326.39
  5. Step 5: Solve for x
    x = 165,853,326.39/13,766.95
  6. Step 6: Final answer
    x = 12,047.21

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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.