Home / 20,297.50-30,455.37-12,900.04

Finding the Fourth Proportional to 20,297.50, 30,455.37 and 12,900.04

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Solution

The fourth proportional to 20,297.50, 30,455.37 and 12,900.04 is: 19,355.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,297.50 : 30,455.37 = 12,900.04 : x
  2. Step 2: Convert to fraction form
    20,297.50/30,455.37 = 12,900.04/x
  3. Step 3: Cross multiply
    20,297.50x = 30,455.37 × 12,900.04
  4. Step 4: Simplify right side
    20,297.50x = 392,875,491.21
  5. Step 5: Solve for x
    x = 392,875,491.21/20,297.50
  6. Step 6: Final answer
    x = 19,355.86

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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.