Home / 21,142.44-29,175.26-11,711.00

Finding the Fourth Proportional to 21,142.44, 29,175.26 and 11,711.00

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Solution

The fourth proportional to 21,142.44, 29,175.26 and 11,711.00 is: 16,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,142.44 : 29,175.26 = 11,711.00 : x
  2. Step 2: Convert to fraction form
    21,142.44/29,175.26 = 11,711.00/x
  3. Step 3: Cross multiply
    21,142.44x = 29,175.26 × 11,711.00
  4. Step 4: Simplify right side
    21,142.44x = 341,671,484.24
  5. Step 5: Solve for x
    x = 341,671,484.24/21,142.44
  6. Step 6: Final answer
    x = 16,160.46

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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.