Home / 25,418.56-38,142.16-19,856.30

Finding the Fourth Proportional to 25,418.56, 38,142.16 and 19,856.30

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Solution

The fourth proportional to 25,418.56, 38,142.16 and 19,856.30 is: 29,795.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,418.56 : 38,142.16 = 19,856.30 : x
  2. Step 2: Convert to fraction form
    25,418.56/38,142.16 = 19,856.30/x
  3. Step 3: Cross multiply
    25,418.56x = 38,142.16 × 19,856.30
  4. Step 4: Simplify right side
    25,418.56x = 757,362,171.61
  5. Step 5: Solve for x
    x = 757,362,171.61/25,418.56
  6. Step 6: Final answer
    x = 29,795.64

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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.