Home / 18,801.12-25,947.36-12,515.52

Finding the Fourth Proportional to 18,801.12, 25,947.36 and 12,515.52

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Solution

The fourth proportional to 18,801.12, 25,947.36 and 12,515.52 is: 17,272.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,801.12 : 25,947.36 = 12,515.52 : x
  2. Step 2: Convert to fraction form
    18,801.12/25,947.36 = 12,515.52/x
  3. Step 3: Cross multiply
    18,801.12x = 25,947.36 × 12,515.52
  4. Step 4: Simplify right side
    18,801.12x = 324,744,703.03
  5. Step 5: Solve for x
    x = 324,744,703.03/18,801.12
  6. Step 6: Final answer
    x = 17,272.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.