Home / 25,620.42-38,431.78-7,849.78

Finding the Fourth Proportional to 25,620.42, 38,431.78 and 7,849.78

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Solution

The fourth proportional to 25,620.42, 38,431.78 and 7,849.78 is: 11,775.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,620.42 : 38,431.78 = 7,849.78 : x
  2. Step 2: Convert to fraction form
    25,620.42/38,431.78 = 7,849.78/x
  3. Step 3: Cross multiply
    25,620.42x = 38,431.78 × 7,849.78
  4. Step 4: Simplify right side
    25,620.42x = 301,681,018.01
  5. Step 5: Solve for x
    x = 301,681,018.01/25,620.42
  6. Step 6: Final answer
    x = 11,775.02

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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.