Home / 18,787.39-28,181.90-7,101.52

Finding the Fourth Proportional to 18,787.39, 28,181.90 and 7,101.52

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Solution

The fourth proportional to 18,787.39, 28,181.90 and 7,101.52 is: 10,652.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,787.39 : 28,181.90 = 7,101.52 : x
  2. Step 2: Convert to fraction form
    18,787.39/28,181.90 = 7,101.52/x
  3. Step 3: Cross multiply
    18,787.39x = 28,181.90 × 7,101.52
  4. Step 4: Simplify right side
    18,787.39x = 200,134,326.49
  5. Step 5: Solve for x
    x = 200,134,326.49/18,787.39
  6. Step 6: Final answer
    x = 10,652.59

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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.