Home / 12,900.60-19,338.14-6,224.78

Finding the Fourth Proportional to 12,900.60, 19,338.14 and 6,224.78

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Solution

The fourth proportional to 12,900.60, 19,338.14 and 6,224.78 is: 9,331.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.60 : 19,338.14 = 6,224.78 : x
  2. Step 2: Convert to fraction form
    12,900.60/19,338.14 = 6,224.78/x
  3. Step 3: Cross multiply
    12,900.60x = 19,338.14 × 6,224.78
  4. Step 4: Simplify right side
    12,900.60x = 120,375,731.02
  5. Step 5: Solve for x
    x = 120,375,731.02/12,900.60
  6. Step 6: Final answer
    x = 9,331.02

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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.