Home / 21,558.26-29,750.40-12,126.83

Finding the Fourth Proportional to 21,558.26, 29,750.40 and 12,126.83

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Solution

The fourth proportional to 21,558.26, 29,750.40 and 12,126.83 is: 16,735.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,558.26 : 29,750.40 = 12,126.83 : x
  2. Step 2: Convert to fraction form
    21,558.26/29,750.40 = 12,126.83/x
  3. Step 3: Cross multiply
    21,558.26x = 29,750.40 × 12,126.83
  4. Step 4: Simplify right side
    21,558.26x = 360,777,894.48
  5. Step 5: Solve for x
    x = 360,777,894.48/21,558.26
  6. Step 6: Final answer
    x = 16,735.02

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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.