Home / 20,607.12-30,909.06-5,815.44

Finding the Fourth Proportional to 20,607.12, 30,909.06 and 5,815.44

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Solution

The fourth proportional to 20,607.12, 30,909.06 and 5,815.44 is: 8,722.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,607.12 : 30,909.06 = 5,815.44 : x
  2. Step 2: Convert to fraction form
    20,607.12/30,909.06 = 5,815.44/x
  3. Step 3: Cross multiply
    20,607.12x = 30,909.06 × 5,815.44
  4. Step 4: Simplify right side
    20,607.12x = 179,749,783.89
  5. Step 5: Solve for x
    x = 179,749,783.89/20,607.12
  6. Step 6: Final answer
    x = 8,722.70

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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.