Home / 12,905.59-19,361.72-4,140.58

Finding the Fourth Proportional to 12,905.59, 19,361.72 and 4,140.58

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Solution

The fourth proportional to 12,905.59, 19,361.72 and 4,140.58 is: 6,211.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.59 : 19,361.72 = 4,140.58 : x
  2. Step 2: Convert to fraction form
    12,905.59/19,361.72 = 4,140.58/x
  3. Step 3: Cross multiply
    12,905.59x = 19,361.72 × 4,140.58
  4. Step 4: Simplify right side
    12,905.59x = 80,168,750.60
  5. Step 5: Solve for x
    x = 80,168,750.60/12,905.59
  6. Step 6: Final answer
    x = 6,211.94

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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.