Home / 13,989.60-19,305.60-7,701.96

Finding the Fourth Proportional to 13,989.60, 19,305.60 and 7,701.96

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Solution

The fourth proportional to 13,989.60, 19,305.60 and 7,701.96 is: 10,628.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.60 : 19,305.60 = 7,701.96 : x
  2. Step 2: Convert to fraction form
    13,989.60/19,305.60 = 7,701.96/x
  3. Step 3: Cross multiply
    13,989.60x = 19,305.60 × 7,701.96
  4. Step 4: Simplify right side
    13,989.60x = 148,690,958.98
  5. Step 5: Solve for x
    x = 148,690,958.98/13,989.60
  6. Step 6: Final answer
    x = 10,628.68

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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.