Home / 20,648.40-28,495.98-11,694.39

Finding the Fourth Proportional to 20,648.40, 28,495.98 and 11,694.39

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Solution

The fourth proportional to 20,648.40, 28,495.98 and 11,694.39 is: 16,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,648.40 : 28,495.98 = 11,694.39 : x
  2. Step 2: Convert to fraction form
    20,648.40/28,495.98 = 11,694.39/x
  3. Step 3: Cross multiply
    20,648.40x = 28,495.98 × 11,694.39
  4. Step 4: Simplify right side
    20,648.40x = 333,243,103.55
  5. Step 5: Solve for x
    x = 333,243,103.55/20,648.40
  6. Step 6: Final answer
    x = 16,138.93

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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.