Home / 20,126.69-30,150.75-13,180.13

Finding the Fourth Proportional to 20,126.69, 30,150.75 and 13,180.13

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Solution

The fourth proportional to 20,126.69, 30,150.75 and 13,180.13 is: 19,744.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.69 : 30,150.75 = 13,180.13 : x
  2. Step 2: Convert to fraction form
    20,126.69/30,150.75 = 13,180.13/x
  3. Step 3: Cross multiply
    20,126.69x = 30,150.75 × 13,180.13
  4. Step 4: Simplify right side
    20,126.69x = 397,390,804.60
  5. Step 5: Solve for x
    x = 397,390,804.60/20,126.69
  6. Step 6: Final answer
    x = 19,744.47

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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.