Home / 21,171.04-29,214.12-11,739.58

Finding the Fourth Proportional to 21,171.04, 29,214.12 and 11,739.58

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Solution

The fourth proportional to 21,171.04, 29,214.12 and 11,739.58 is: 16,199.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,171.04 : 29,214.12 = 11,739.58 : x
  2. Step 2: Convert to fraction form
    21,171.04/29,214.12 = 11,739.58/x
  3. Step 3: Cross multiply
    21,171.04x = 29,214.12 × 11,739.58
  4. Step 4: Simplify right side
    21,171.04x = 342,961,498.87
  5. Step 5: Solve for x
    x = 342,961,498.87/21,171.04
  6. Step 6: Final answer
    x = 16,199.56

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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.