Home / 21,106.12-29,127-11,674.84

Finding the Fourth Proportional to 21,106.12, 29,127 and 11,674.84

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Solution

The fourth proportional to 21,106.12, 29,127 and 11,674.84 is: 16,111.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106.12 : 29,127 = 11,674.84 : x
  2. Step 2: Convert to fraction form
    21,106.12/29,127 = 11,674.84/x
  3. Step 3: Cross multiply
    21,106.12x = 29,127 × 11,674.84
  4. Step 4: Simplify right side
    21,106.12x = 340,053,064.68
  5. Step 5: Solve for x
    x = 340,053,064.68/21,106.12
  6. Step 6: Final answer
    x = 16,111.59

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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.