Home / 20,078.67-30,172.47-10,725.19

Finding the Fourth Proportional to 20,078.67, 30,172.47 and 10,725.19

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Solution

The fourth proportional to 20,078.67, 30,172.47 and 10,725.19 is: 16,116.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.67 : 30,172.47 = 10,725.19 : x
  2. Step 2: Convert to fraction form
    20,078.67/30,172.47 = 10,725.19/x
  3. Step 3: Cross multiply
    20,078.67x = 30,172.47 × 10,725.19
  4. Step 4: Simplify right side
    20,078.67x = 323,605,473.52
  5. Step 5: Solve for x
    x = 323,605,473.52/20,078.67
  6. Step 6: Final answer
    x = 16,116.88

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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.