Home / 21,173.60-29,219.61-11,613.57

Finding the Fourth Proportional to 21,173.60, 29,219.61 and 11,613.57

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Solution

The fourth proportional to 21,173.60, 29,219.61 and 11,613.57 is: 16,026.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,173.60 : 29,219.61 = 11,613.57 : x
  2. Step 2: Convert to fraction form
    21,173.60/29,219.61 = 11,613.57/x
  3. Step 3: Cross multiply
    21,173.60x = 29,219.61 × 11,613.57
  4. Step 4: Simplify right side
    21,173.60x = 339,343,906.34
  5. Step 5: Solve for x
    x = 339,343,906.34/21,173.60
  6. Step 6: Final answer
    x = 16,026.74

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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.