Home / 20,105.07-30,159.27-7,625.07

Finding the Fourth Proportional to 20,105.07, 30,159.27 and 7,625.07

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Solution

The fourth proportional to 20,105.07, 30,159.27 and 7,625.07 is: 11,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,105.07 : 30,159.27 = 7,625.07 : x
  2. Step 2: Convert to fraction form
    20,105.07/30,159.27 = 7,625.07/x
  3. Step 3: Cross multiply
    20,105.07x = 30,159.27 × 7,625.07
  4. Step 4: Simplify right side
    20,105.07x = 229,966,544.90
  5. Step 5: Solve for x
    x = 229,966,544.90/20,105.07
  6. Step 6: Final answer
    x = 11,438.24

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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.