Home / 18,816.35-28,230.96-11,787.98

Finding the Fourth Proportional to 18,816.35, 28,230.96 and 11,787.98

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Solution

The fourth proportional to 18,816.35, 28,230.96 and 11,787.98 is: 17,686.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,816.35 : 28,230.96 = 11,787.98 : x
  2. Step 2: Convert to fraction form
    18,816.35/28,230.96 = 11,787.98/x
  3. Step 3: Cross multiply
    18,816.35x = 28,230.96 × 11,787.98
  4. Step 4: Simplify right side
    18,816.35x = 332,785,954.25
  5. Step 5: Solve for x
    x = 332,785,954.25/18,816.35
  6. Step 6: Final answer
    x = 17,686.00

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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.