Home / 20,484.80-30,727.20-7,337.60

Finding the Fourth Proportional to 20,484.80, 30,727.20 and 7,337.60

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Solution

The fourth proportional to 20,484.80, 30,727.20 and 7,337.60 is: 11,006.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.80 : 30,727.20 = 7,337.60 : x
  2. Step 2: Convert to fraction form
    20,484.80/30,727.20 = 7,337.60/x
  3. Step 3: Cross multiply
    20,484.80x = 30,727.20 × 7,337.60
  4. Step 4: Simplify right side
    20,484.80x = 225,463,902.72
  5. Step 5: Solve for x
    x = 225,463,902.72/20,484.80
  6. Step 6: Final answer
    x = 11,006.40

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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.