Home / 21,636.06-29,857.86-12,683.70

Finding the Fourth Proportional to 21,636.06, 29,857.86 and 12,683.70

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Solution

The fourth proportional to 21,636.06, 29,857.86 and 12,683.70 is: 17,503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,636.06 : 29,857.86 = 12,683.70 : x
  2. Step 2: Convert to fraction form
    21,636.06/29,857.86 = 12,683.70/x
  3. Step 3: Cross multiply
    21,636.06x = 29,857.86 × 12,683.70
  4. Step 4: Simplify right side
    21,636.06x = 378,708,138.88
  5. Step 5: Solve for x
    x = 378,708,138.88/21,636.06
  6. Step 6: Final answer
    x = 17,503.56

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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.