Home / 20,277.53-30,399.03-12,385.58

Finding the Fourth Proportional to 20,277.53, 30,399.03 and 12,385.58

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Solution

The fourth proportional to 20,277.53, 30,399.03 and 12,385.58 is: 18,567.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,277.53 : 30,399.03 = 12,385.58 : x
  2. Step 2: Convert to fraction form
    20,277.53/30,399.03 = 12,385.58/x
  3. Step 3: Cross multiply
    20,277.53x = 30,399.03 × 12,385.58
  4. Step 4: Simplify right side
    20,277.53x = 376,509,465.99
  5. Step 5: Solve for x
    x = 376,509,465.99/20,277.53
  6. Step 6: Final answer
    x = 18,567.82

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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.