Home / 21,134.13-29,165.04-12,181.56

Finding the Fourth Proportional to 21,134.13, 29,165.04 and 12,181.56

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Solution

The fourth proportional to 21,134.13, 29,165.04 and 12,181.56 is: 16,810.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,134.13 : 29,165.04 = 12,181.56 : x
  2. Step 2: Convert to fraction form
    21,134.13/29,165.04 = 12,181.56/x
  3. Step 3: Cross multiply
    21,134.13x = 29,165.04 × 12,181.56
  4. Step 4: Simplify right side
    21,134.13x = 355,275,538.84
  5. Step 5: Solve for x
    x = 355,275,538.84/21,134.13
  6. Step 6: Final answer
    x = 16,810.52

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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.