Home / 20,293.14-30,438.66-7,145.60

Finding the Fourth Proportional to 20,293.14, 30,438.66 and 7,145.60

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Solution

The fourth proportional to 20,293.14, 30,438.66 and 7,145.60 is: 10,718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,293.14 : 30,438.66 = 7,145.60 : x
  2. Step 2: Convert to fraction form
    20,293.14/30,438.66 = 7,145.60/x
  3. Step 3: Cross multiply
    20,293.14x = 30,438.66 × 7,145.60
  4. Step 4: Simplify right side
    20,293.14x = 217,502,488.90
  5. Step 5: Solve for x
    x = 217,502,488.90/20,293.14
  6. Step 6: Final answer
    x = 10,718.03

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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.