Home / 20,095.12-30,172.11-19,740.79

Finding the Fourth Proportional to 20,095.12, 30,172.11 and 19,740.79

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Solution

The fourth proportional to 20,095.12, 30,172.11 and 19,740.79 is: 29,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,095.12 : 30,172.11 = 19,740.79 : x
  2. Step 2: Convert to fraction form
    20,095.12/30,172.11 = 19,740.79/x
  3. Step 3: Cross multiply
    20,095.12x = 30,172.11 × 19,740.79
  4. Step 4: Simplify right side
    20,095.12x = 595,621,287.37
  5. Step 5: Solve for x
    x = 595,621,287.37/20,095.12
  6. Step 6: Final answer
    x = 29,640.10

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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.