Home / 12,905.52-19,361.02-4,146.58

Finding the Fourth Proportional to 12,905.52, 19,361.02 and 4,146.58

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Solution

The fourth proportional to 12,905.52, 19,361.02 and 4,146.58 is: 6,220.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,905.52 : 19,361.02 = 4,146.58 : x
  2. Step 2: Convert to fraction form
    12,905.52/19,361.02 = 4,146.58/x
  3. Step 3: Cross multiply
    12,905.52x = 19,361.02 × 4,146.58
  4. Step 4: Simplify right side
    12,905.52x = 80,282,018.31
  5. Step 5: Solve for x
    x = 80,282,018.31/12,905.52
  6. Step 6: Final answer
    x = 6,220.75

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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.