Home / 12,171.70-18,257.55-4,776.40

Finding the Fourth Proportional to 12,171.70, 18,257.55 and 4,776.40

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Solution

The fourth proportional to 12,171.70, 18,257.55 and 4,776.40 is: 7,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,171.70 : 18,257.55 = 4,776.40 : x
  2. Step 2: Convert to fraction form
    12,171.70/18,257.55 = 4,776.40/x
  3. Step 3: Cross multiply
    12,171.70x = 18,257.55 × 4,776.40
  4. Step 4: Simplify right side
    12,171.70x = 87,205,361.82
  5. Step 5: Solve for x
    x = 87,205,361.82/12,171.70
  6. Step 6: Final answer
    x = 7,164.60

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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.