Home / 13,606.17-18,780.43-8,228.62

Finding the Fourth Proportional to 13,606.17, 18,780.43 and 8,228.62

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Solution

The fourth proportional to 13,606.17, 18,780.43 and 8,228.62 is: 11,357.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.17 : 18,780.43 = 8,228.62 : x
  2. Step 2: Convert to fraction form
    13,606.17/18,780.43 = 8,228.62/x
  3. Step 3: Cross multiply
    13,606.17x = 18,780.43 × 8,228.62
  4. Step 4: Simplify right side
    13,606.17x = 154,536,928.00
  5. Step 5: Solve for x
    x = 154,536,928.00/13,606.17
  6. Step 6: Final answer
    x = 11,357.86

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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.