Home / 12,712.37-19,068.35-3,947.29

Finding the Fourth Proportional to 12,712.37, 19,068.35 and 3,947.29

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Solution

The fourth proportional to 12,712.37, 19,068.35 and 3,947.29 is: 5,920.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,712.37 : 19,068.35 = 3,947.29 : x
  2. Step 2: Convert to fraction form
    12,712.37/19,068.35 = 3,947.29/x
  3. Step 3: Cross multiply
    12,712.37x = 19,068.35 × 3,947.29
  4. Step 4: Simplify right side
    12,712.37x = 75,268,326.17
  5. Step 5: Solve for x
    x = 75,268,326.17/12,712.37
  6. Step 6: Final answer
    x = 5,920.87

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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.