Home / 20,320.68-30,485.25-7,182.48

Finding the Fourth Proportional to 20,320.68, 30,485.25 and 7,182.48

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Solution

The fourth proportional to 20,320.68, 30,485.25 and 7,182.48 is: 10,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.68 : 30,485.25 = 7,182.48 : x
  2. Step 2: Convert to fraction form
    20,320.68/30,485.25 = 7,182.48/x
  3. Step 3: Cross multiply
    20,320.68x = 30,485.25 × 7,182.48
  4. Step 4: Simplify right side
    20,320.68x = 218,959,698.42
  5. Step 5: Solve for x
    x = 218,959,698.42/20,320.68
  6. Step 6: Final answer
    x = 10,775.22

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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.