Home / 18,787.08-28,180.56-5,639.44

Finding the Fourth Proportional to 18,787.08, 28,180.56 and 5,639.44

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Solution

The fourth proportional to 18,787.08, 28,180.56 and 5,639.44 is: 8,459.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.08 : 28,180.56 = 5,639.44 : x
  2. Step 2: Convert to fraction form
    18,787.08/28,180.56 = 5,639.44/x
  3. Step 3: Cross multiply
    18,787.08x = 28,180.56 × 5,639.44
  4. Step 4: Simplify right side
    18,787.08x = 158,922,577.29
  5. Step 5: Solve for x
    x = 158,922,577.29/18,787.08
  6. Step 6: Final answer
    x = 8,459.14

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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.