Home / 12,919.52-19,377.02-3,557.28

Finding the Fourth Proportional to 12,919.52, 19,377.02 and 3,557.28

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Solution

The fourth proportional to 12,919.52, 19,377.02 and 3,557.28 is: 5,335.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.52 : 19,377.02 = 3,557.28 : x
  2. Step 2: Convert to fraction form
    12,919.52/19,377.02 = 3,557.28/x
  3. Step 3: Cross multiply
    12,919.52x = 19,377.02 × 3,557.28
  4. Step 4: Simplify right side
    12,919.52x = 68,929,567.26
  5. Step 5: Solve for x
    x = 68,929,567.26/12,919.52
  6. Step 6: Final answer
    x = 5,335.31

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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.