Home / 20,500.09-30,750.15-5,709.04

Finding the Fourth Proportional to 20,500.09, 30,750.15 and 5,709.04

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Solution

The fourth proportional to 20,500.09, 30,750.15 and 5,709.04 is: 8,563.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,500.09 : 30,750.15 = 5,709.04 : x
  2. Step 2: Convert to fraction form
    20,500.09/30,750.15 = 5,709.04/x
  3. Step 3: Cross multiply
    20,500.09x = 30,750.15 × 5,709.04
  4. Step 4: Simplify right side
    20,500.09x = 175,553,836.36
  5. Step 5: Solve for x
    x = 175,553,836.36/20,500.09
  6. Step 6: Final answer
    x = 8,563.56

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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.