Home / 20,300.96-30,451.44-9,903.80

Finding the Fourth Proportional to 20,300.96, 30,451.44 and 9,903.80

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Solution

The fourth proportional to 20,300.96, 30,451.44 and 9,903.80 is: 14,855.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,300.96 : 30,451.44 = 9,903.80 : x
  2. Step 2: Convert to fraction form
    20,300.96/30,451.44 = 9,903.80/x
  3. Step 3: Cross multiply
    20,300.96x = 30,451.44 × 9,903.80
  4. Step 4: Simplify right side
    20,300.96x = 301,584,829.89
  5. Step 5: Solve for x
    x = 301,584,829.89/20,300.96
  6. Step 6: Final answer
    x = 14,855.70

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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.