Home / 21,136.50-29,170.32-11,708.10

Finding the Fourth Proportional to 21,136.50, 29,170.32 and 11,708.10

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Solution

The fourth proportional to 21,136.50, 29,170.32 and 11,708.10 is: 16,158.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,136.50 : 29,170.32 = 11,708.10 : x
  2. Step 2: Convert to fraction form
    21,136.50/29,170.32 = 11,708.10/x
  3. Step 3: Cross multiply
    21,136.50x = 29,170.32 × 11,708.10
  4. Step 4: Simplify right side
    21,136.50x = 341,529,023.59
  5. Step 5: Solve for x
    x = 341,529,023.59/21,136.50
  6. Step 6: Final answer
    x = 16,158.26

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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.