Home / 12,947.25-19,416.75-4,180.12

Finding the Fourth Proportional to 12,947.25, 19,416.75 and 4,180.12

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Solution

The fourth proportional to 12,947.25, 19,416.75 and 4,180.12 is: 6,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,947.25 : 19,416.75 = 4,180.12 : x
  2. Step 2: Convert to fraction form
    12,947.25/19,416.75 = 4,180.12/x
  3. Step 3: Cross multiply
    12,947.25x = 19,416.75 × 4,180.12
  4. Step 4: Simplify right side
    12,947.25x = 81,164,345.01
  5. Step 5: Solve for x
    x = 81,164,345.01/12,947.25
  6. Step 6: Final answer
    x = 6,268.85

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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.