Home / 19,215.70-28,823.55-8,134.90

Finding the Fourth Proportional to 19,215.70, 28,823.55 and 8,134.90

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Solution

The fourth proportional to 19,215.70, 28,823.55 and 8,134.90 is: 12,202.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,215.70 : 28,823.55 = 8,134.90 : x
  2. Step 2: Convert to fraction form
    19,215.70/28,823.55 = 8,134.90/x
  3. Step 3: Cross multiply
    19,215.70x = 28,823.55 × 8,134.90
  4. Step 4: Simplify right side
    19,215.70x = 234,476,696.90
  5. Step 5: Solve for x
    x = 234,476,696.90/19,215.70
  6. Step 6: Final answer
    x = 12,202.35

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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.