Home / 20,128.24-30,177.24-10,262.80

Finding the Fourth Proportional to 20,128.24, 30,177.24 and 10,262.80

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Solution

The fourth proportional to 20,128.24, 30,177.24 and 10,262.80 is: 15,386.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,128.24 : 30,177.24 = 10,262.80 : x
  2. Step 2: Convert to fraction form
    20,128.24/30,177.24 = 10,262.80/x
  3. Step 3: Cross multiply
    20,128.24x = 30,177.24 × 10,262.80
  4. Step 4: Simplify right side
    20,128.24x = 309,702,978.67
  5. Step 5: Solve for x
    x = 309,702,978.67/20,128.24
  6. Step 6: Final answer
    x = 15,386.49

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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.