Home / 12,890.40-19,297.32-7,029.24

Finding the Fourth Proportional to 12,890.40, 19,297.32 and 7,029.24

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Solution

The fourth proportional to 12,890.40, 19,297.32 and 7,029.24 is: 10,522.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.40 : 19,297.32 = 7,029.24 : x
  2. Step 2: Convert to fraction form
    12,890.40/19,297.32 = 7,029.24/x
  3. Step 3: Cross multiply
    12,890.40x = 19,297.32 × 7,029.24
  4. Step 4: Simplify right side
    12,890.40x = 135,645,394.91
  5. Step 5: Solve for x
    x = 135,645,394.91/12,890.40
  6. Step 6: Final answer
    x = 10,522.98

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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.