Home / 20,138.48-30,185.04-9,051.20

Finding the Fourth Proportional to 20,138.48, 30,185.04 and 9,051.20

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Solution

The fourth proportional to 20,138.48, 30,185.04 and 9,051.20 is: 13,566.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,138.48 : 30,185.04 = 9,051.20 : x
  2. Step 2: Convert to fraction form
    20,138.48/30,185.04 = 9,051.20/x
  3. Step 3: Cross multiply
    20,138.48x = 30,185.04 × 9,051.20
  4. Step 4: Simplify right side
    20,138.48x = 273,210,834.05
  5. Step 5: Solve for x
    x = 273,210,834.05/20,138.48
  6. Step 6: Final answer
    x = 13,566.61

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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.