Home / 12,900.53-19,350.39-3,666.53

Finding the Fourth Proportional to 12,900.53, 19,350.39 and 3,666.53

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Solution

The fourth proportional to 12,900.53, 19,350.39 and 3,666.53 is: 5,499.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.53 : 19,350.39 = 3,666.53 : x
  2. Step 2: Convert to fraction form
    12,900.53/19,350.39 = 3,666.53/x
  3. Step 3: Cross multiply
    12,900.53x = 19,350.39 × 3,666.53
  4. Step 4: Simplify right side
    12,900.53x = 70,948,785.45
  5. Step 5: Solve for x
    x = 70,948,785.45/12,900.53
  6. Step 6: Final answer
    x = 5,499.68

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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.