Home / 20,267.89-30,435.45-12,525.91

Finding the Fourth Proportional to 20,267.89, 30,435.45 and 12,525.91

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Solution

The fourth proportional to 20,267.89, 30,435.45 and 12,525.91 is: 18,809.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,267.89 : 30,435.45 = 12,525.91 : x
  2. Step 2: Convert to fraction form
    20,267.89/30,435.45 = 12,525.91/x
  3. Step 3: Cross multiply
    20,267.89x = 30,435.45 × 12,525.91
  4. Step 4: Simplify right side
    20,267.89x = 381,231,707.51
  5. Step 5: Solve for x
    x = 381,231,707.51/20,267.89
  6. Step 6: Final answer
    x = 18,809.64

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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.