Home / 20,267.81-30,435.43-12,525.83

Finding the Fourth Proportional to 20,267.81, 30,435.43 and 12,525.83

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Solution

The fourth proportional to 20,267.81, 30,435.43 and 12,525.83 is: 18,809.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.81 : 30,435.43 = 12,525.83 : x
  2. Step 2: Convert to fraction form
    20,267.81/30,435.43 = 12,525.83/x
  3. Step 3: Cross multiply
    20,267.81x = 30,435.43 × 12,525.83
  4. Step 4: Simplify right side
    20,267.81x = 381,229,022.16
  5. Step 5: Solve for x
    x = 381,229,022.16/20,267.81
  6. Step 6: Final answer
    x = 18,809.58

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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.