Home / 18,787.95-28,173.62-5,637.80

Finding the Fourth Proportional to 18,787.95, 28,173.62 and 5,637.80

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Solution

The fourth proportional to 18,787.95, 28,173.62 and 5,637.80 is: 8,454.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.95 : 28,173.62 = 5,637.80 : x
  2. Step 2: Convert to fraction form
    18,787.95/28,173.62 = 5,637.80/x
  3. Step 3: Cross multiply
    18,787.95x = 28,173.62 × 5,637.80
  4. Step 4: Simplify right side
    18,787.95x = 158,837,319.36
  5. Step 5: Solve for x
    x = 158,837,319.36/18,787.95
  6. Step 6: Final answer
    x = 8,454.21

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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.