Home / 20,077.07-30,120.39-6,929.56

Finding the Fourth Proportional to 20,077.07, 30,120.39 and 6,929.56

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Solution

The fourth proportional to 20,077.07, 30,120.39 and 6,929.56 is: 10,395.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,077.07 : 30,120.39 = 6,929.56 : x
  2. Step 2: Convert to fraction form
    20,077.07/30,120.39 = 6,929.56/x
  3. Step 3: Cross multiply
    20,077.07x = 30,120.39 × 6,929.56
  4. Step 4: Simplify right side
    20,077.07x = 208,720,899.13
  5. Step 5: Solve for x
    x = 208,720,899.13/20,077.07
  6. Step 6: Final answer
    x = 10,395.98

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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.