Home / 25,647.82-38,400.88-13,140.91

Finding the Fourth Proportional to 25,647.82, 38,400.88 and 13,140.91

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Solution

The fourth proportional to 25,647.82, 38,400.88 and 13,140.91 is: 19,675.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,647.82 : 38,400.88 = 13,140.91 : x
  2. Step 2: Convert to fraction form
    25,647.82/38,400.88 = 13,140.91/x
  3. Step 3: Cross multiply
    25,647.82x = 38,400.88 × 13,140.91
  4. Step 4: Simplify right side
    25,647.82x = 504,622,619.79
  5. Step 5: Solve for x
    x = 504,622,619.79/25,647.82
  6. Step 6: Final answer
    x = 19,675.07

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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.