Home / 25,431.13-38,146.70-7,900.96

Finding the Fourth Proportional to 25,431.13, 38,146.70 and 7,900.96

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Solution

The fourth proportional to 25,431.13, 38,146.70 and 7,900.96 is: 11,851.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,431.13 : 38,146.70 = 7,900.96 : x
  2. Step 2: Convert to fraction form
    25,431.13/38,146.70 = 7,900.96/x
  3. Step 3: Cross multiply
    25,431.13x = 38,146.70 × 7,900.96
  4. Step 4: Simplify right side
    25,431.13x = 301,395,550.83
  5. Step 5: Solve for x
    x = 301,395,550.83/25,431.13
  6. Step 6: Final answer
    x = 11,851.44

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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.