Home / 13,716.91-20,529.28-7,864.75

Finding the Fourth Proportional to 13,716.91, 20,529.28 and 7,864.75

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Solution

The fourth proportional to 13,716.91, 20,529.28 and 7,864.75 is: 11,770.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,716.91 : 20,529.28 = 7,864.75 : x
  2. Step 2: Convert to fraction form
    13,716.91/20,529.28 = 7,864.75/x
  3. Step 3: Cross multiply
    13,716.91x = 20,529.28 × 7,864.75
  4. Step 4: Simplify right side
    13,716.91x = 161,457,654.88
  5. Step 5: Solve for x
    x = 161,457,654.88/13,716.91
  6. Step 6: Final answer
    x = 11,770.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.