Home / 18,681.18-28,007.82-11,283.96

Finding the Fourth Proportional to 18,681.18, 28,007.82 and 11,283.96

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Solution

The fourth proportional to 18,681.18, 28,007.82 and 11,283.96 is: 16,917.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.18 : 28,007.82 = 11,283.96 : x
  2. Step 2: Convert to fraction form
    18,681.18/28,007.82 = 11,283.96/x
  3. Step 3: Cross multiply
    18,681.18x = 28,007.82 × 11,283.96
  4. Step 4: Simplify right side
    18,681.18x = 316,039,120.57
  5. Step 5: Solve for x
    x = 316,039,120.57/18,681.18
  6. Step 6: Final answer
    x = 16,917.51

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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.