Home / 25,947.12-38,920.72-8,418.32

Finding the Fourth Proportional to 25,947.12, 38,920.72 and 8,418.32

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Solution

The fourth proportional to 25,947.12, 38,920.72 and 8,418.32 is: 12,627.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,947.12 : 38,920.72 = 8,418.32 : x
  2. Step 2: Convert to fraction form
    25,947.12/38,920.72 = 8,418.32/x
  3. Step 3: Cross multiply
    25,947.12x = 38,920.72 × 8,418.32
  4. Step 4: Simplify right side
    25,947.12x = 327,647,075.59
  5. Step 5: Solve for x
    x = 327,647,075.59/25,947.12
  6. Step 6: Final answer
    x = 12,627.49

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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.