Home / 13,685.66-18,884.60-7,716.96

Finding the Fourth Proportional to 13,685.66, 18,884.60 and 7,716.96

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Solution

The fourth proportional to 13,685.66, 18,884.60 and 7,716.96 is: 10,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,685.66 : 18,884.60 = 7,716.96 : x
  2. Step 2: Convert to fraction form
    13,685.66/18,884.60 = 7,716.96/x
  3. Step 3: Cross multiply
    13,685.66x = 18,884.60 × 7,716.96
  4. Step 4: Simplify right side
    13,685.66x = 145,731,702.82
  5. Step 5: Solve for x
    x = 145,731,702.82/13,685.66
  6. Step 6: Final answer
    x = 10,648.50

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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.