Home / 12,181.74-18,271.80-4,787.46

Finding the Fourth Proportional to 12,181.74, 18,271.80 and 4,787.46

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Solution

The fourth proportional to 12,181.74, 18,271.80 and 4,787.46 is: 7,180.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.74 : 18,271.80 = 4,787.46 : x
  2. Step 2: Convert to fraction form
    12,181.74/18,271.80 = 4,787.46/x
  3. Step 3: Cross multiply
    12,181.74x = 18,271.80 × 4,787.46
  4. Step 4: Simplify right side
    12,181.74x = 87,475,511.63
  5. Step 5: Solve for x
    x = 87,475,511.63/12,181.74
  6. Step 6: Final answer
    x = 7,180.87

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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.