Home / 12,930.26-19,403.90-7,090.97

Finding the Fourth Proportional to 12,930.26, 19,403.90 and 7,090.97

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Solution

The fourth proportional to 12,930.26, 19,403.90 and 7,090.97 is: 10,641.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.26 : 19,403.90 = 7,090.97 : x
  2. Step 2: Convert to fraction form
    12,930.26/19,403.90 = 7,090.97/x
  3. Step 3: Cross multiply
    12,930.26x = 19,403.90 × 7,090.97
  4. Step 4: Simplify right side
    12,930.26x = 137,592,437.33
  5. Step 5: Solve for x
    x = 137,592,437.33/12,930.26
  6. Step 6: Final answer
    x = 10,641.12

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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.