Home / 12,930.09-19,380.09-7,387.32

Finding the Fourth Proportional to 12,930.09, 19,380.09 and 7,387.32

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Solution

The fourth proportional to 12,930.09, 19,380.09 and 7,387.32 is: 11,072.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.09 : 19,380.09 = 7,387.32 : x
  2. Step 2: Convert to fraction form
    12,930.09/19,380.09 = 7,387.32/x
  3. Step 3: Cross multiply
    12,930.09x = 19,380.09 × 7,387.32
  4. Step 4: Simplify right side
    12,930.09x = 143,166,926.46
  5. Step 5: Solve for x
    x = 143,166,926.46/12,930.09
  6. Step 6: Final answer
    x = 11,072.38

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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.