Home / 12,912.52-19,371.53-4,153.58

Finding the Fourth Proportional to 12,912.52, 19,371.53 and 4,153.58

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Solution

The fourth proportional to 12,912.52, 19,371.53 and 4,153.58 is: 6,231.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.52 : 19,371.53 = 4,153.58 : x
  2. Step 2: Convert to fraction form
    12,912.52/19,371.53 = 4,153.58/x
  3. Step 3: Cross multiply
    12,912.52x = 19,371.53 × 4,153.58
  4. Step 4: Simplify right side
    12,912.52x = 80,461,199.58
  5. Step 5: Solve for x
    x = 80,461,199.58/12,912.52
  6. Step 6: Final answer
    x = 6,231.25

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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.