Home / 20,120.04-30,175.38-7,641.36

Finding the Fourth Proportional to 20,120.04, 30,175.38 and 7,641.36

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Solution

The fourth proportional to 20,120.04, 30,175.38 and 7,641.36 is: 11,460.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,120.04 : 30,175.38 = 7,641.36 : x
  2. Step 2: Convert to fraction form
    20,120.04/30,175.38 = 7,641.36/x
  3. Step 3: Cross multiply
    20,120.04x = 30,175.38 × 7,641.36
  4. Step 4: Simplify right side
    20,120.04x = 230,580,941.72
  5. Step 5: Solve for x
    x = 230,580,941.72/20,120.04
  6. Step 6: Final answer
    x = 11,460.26

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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.