Home / 12,890.31-19,297.17-7,029.15

Finding the Fourth Proportional to 12,890.31, 19,297.17 and 7,029.15

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Solution

The fourth proportional to 12,890.31, 19,297.17 and 7,029.15 is: 10,522.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.31 : 19,297.17 = 7,029.15 : x
  2. Step 2: Convert to fraction form
    12,890.31/19,297.17 = 7,029.15/x
  3. Step 3: Cross multiply
    12,890.31x = 19,297.17 × 7,029.15
  4. Step 4: Simplify right side
    12,890.31x = 135,642,630.14
  5. Step 5: Solve for x
    x = 135,642,630.14/12,890.31
  6. Step 6: Final answer
    x = 10,522.84

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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.