Home / 13,682.28-18,881.58-7,713.96

Finding the Fourth Proportional to 13,682.28, 18,881.58 and 7,713.96

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Solution

The fourth proportional to 13,682.28, 18,881.58 and 7,713.96 is: 10,645.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.28 : 18,881.58 = 7,713.96 : x
  2. Step 2: Convert to fraction form
    13,682.28/18,881.58 = 7,713.96/x
  3. Step 3: Cross multiply
    13,682.28x = 18,881.58 × 7,713.96
  4. Step 4: Simplify right side
    13,682.28x = 145,651,752.86
  5. Step 5: Solve for x
    x = 145,651,752.86/13,682.28
  6. Step 6: Final answer
    x = 10,645.28

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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.