Home / 25,958.16-38,920.14-9,309.78

Finding the Fourth Proportional to 25,958.16, 38,920.14 and 9,309.78

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Solution

The fourth proportional to 25,958.16, 38,920.14 and 9,309.78 is: 13,958.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,958.16 : 38,920.14 = 9,309.78 : x
  2. Step 2: Convert to fraction form
    25,958.16/38,920.14 = 9,309.78/x
  3. Step 3: Cross multiply
    25,958.16x = 38,920.14 × 9,309.78
  4. Step 4: Simplify right side
    25,958.16x = 362,337,940.97
  5. Step 5: Solve for x
    x = 362,337,940.97/25,958.16
  6. Step 6: Final answer
    x = 13,958.54

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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.