Home / 12,815.70-19,223.55-5,890.20

Finding the Fourth Proportional to 12,815.70, 19,223.55 and 5,890.20

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Solution

The fourth proportional to 12,815.70, 19,223.55 and 5,890.20 is: 8,835.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,815.70 : 19,223.55 = 5,890.20 : x
  2. Step 2: Convert to fraction form
    12,815.70/19,223.55 = 5,890.20/x
  3. Step 3: Cross multiply
    12,815.70x = 19,223.55 × 5,890.20
  4. Step 4: Simplify right side
    12,815.70x = 113,230,554.21
  5. Step 5: Solve for x
    x = 113,230,554.21/12,815.70
  6. Step 6: Final answer
    x = 8,835.30

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Similar ratio
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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.