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Finding the Fourth Proportional to 11,295.90, 15,588.92 and 6,819.95

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Solution

The fourth proportional to 11,295.90, 15,588.92 and 6,819.95 is: 9,411.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,295.90 : 15,588.92 = 6,819.95 : x
  2. Step 2: Convert to fraction form
    11,295.90/15,588.92 = 6,819.95/x
  3. Step 3: Cross multiply
    11,295.90x = 15,588.92 × 6,819.95
  4. Step 4: Simplify right side
    11,295.90x = 106,315,710.98
  5. Step 5: Solve for x
    x = 106,315,710.98/11,295.90
  6. Step 6: Final answer
    x = 9,411.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.