Home / 12,505.11-18,760.63-3,740.30

Finding the Fourth Proportional to 12,505.11, 18,760.63 and 3,740.30

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Solution

The fourth proportional to 12,505.11, 18,760.63 and 3,740.30 is: 5,611.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.11 : 18,760.63 = 3,740.30 : x
  2. Step 2: Convert to fraction form
    12,505.11/18,760.63 = 3,740.30/x
  3. Step 3: Cross multiply
    12,505.11x = 18,760.63 × 3,740.30
  4. Step 4: Simplify right side
    12,505.11x = 70,170,384.39
  5. Step 5: Solve for x
    x = 70,170,384.39/12,505.11
  6. Step 6: Final answer
    x = 5,611.34

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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.