Home / 21,141.12-29,175.52-11,710.56

Finding the Fourth Proportional to 21,141.12, 29,175.52 and 11,710.56

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Solution

The fourth proportional to 21,141.12, 29,175.52 and 11,710.56 is: 16,161.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,141.12 : 29,175.52 = 11,710.56 : x
  2. Step 2: Convert to fraction form
    21,141.12/29,175.52 = 11,710.56/x
  3. Step 3: Cross multiply
    21,141.12x = 29,175.52 × 11,710.56
  4. Step 4: Simplify right side
    21,141.12x = 341,661,677.49
  5. Step 5: Solve for x
    x = 341,661,677.49/21,141.12
  6. Step 6: Final answer
    x = 16,161.00

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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.