Home / 20,200.80-30,287.52-10,320.96

Finding the Fourth Proportional to 20,200.80, 30,287.52 and 10,320.96

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Solution

The fourth proportional to 20,200.80, 30,287.52 and 10,320.96 is: 15,474.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.80 : 30,287.52 = 10,320.96 : x
  2. Step 2: Convert to fraction form
    20,200.80/30,287.52 = 10,320.96/x
  3. Step 3: Cross multiply
    20,200.80x = 30,287.52 × 10,320.96
  4. Step 4: Simplify right side
    20,200.80x = 312,596,282.42
  5. Step 5: Solve for x
    x = 312,596,282.42/20,200.80
  6. Step 6: Final answer
    x = 15,474.45

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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.