Home / 30,516.80-45,757.38-12,977.60

Finding the Fourth Proportional to 30,516.80, 45,757.38 and 12,977.60

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Solution

The fourth proportional to 30,516.80, 45,757.38 and 12,977.60 is: 19,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,516.80 : 45,757.38 = 12,977.60 : x
  2. Step 2: Convert to fraction form
    30,516.80/45,757.38 = 12,977.60/x
  3. Step 3: Cross multiply
    30,516.80x = 45,757.38 × 12,977.60
  4. Step 4: Simplify right side
    30,516.80x = 593,820,974.69
  5. Step 5: Solve for x
    x = 593,820,974.69/30,516.80
  6. Step 6: Final answer
    x = 19,458.82

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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.