Home / 20,121.52-30,170.52-6,077.36

Finding the Fourth Proportional to 20,121.52, 30,170.52 and 6,077.36

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Solution

The fourth proportional to 20,121.52, 30,170.52 and 6,077.36 is: 9,112.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.52 : 30,170.52 = 6,077.36 : x
  2. Step 2: Convert to fraction form
    20,121.52/30,170.52 = 6,077.36/x
  3. Step 3: Cross multiply
    20,121.52x = 30,170.52 × 6,077.36
  4. Step 4: Simplify right side
    20,121.52x = 183,357,111.43
  5. Step 5: Solve for x
    x = 183,357,111.43/20,121.52
  6. Step 6: Final answer
    x = 9,112.49

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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.