Home / 20,529.81-30,820.23-20,435.04

Finding the Fourth Proportional to 20,529.81, 30,820.23 and 20,435.04

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Solution

The fourth proportional to 20,529.81, 30,820.23 and 20,435.04 is: 30,677.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,529.81 : 30,820.23 = 20,435.04 : x
  2. Step 2: Convert to fraction form
    20,529.81/30,820.23 = 20,435.04/x
  3. Step 3: Cross multiply
    20,529.81x = 30,820.23 × 20,435.04
  4. Step 4: Simplify right side
    20,529.81x = 629,812,632.86
  5. Step 5: Solve for x
    x = 629,812,632.86/20,529.81
  6. Step 6: Final answer
    x = 30,677.96

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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.