Home / 21,179.04-29,230.58-11,750.64

Finding the Fourth Proportional to 21,179.04, 29,230.58 and 11,750.64

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Solution

The fourth proportional to 21,179.04, 29,230.58 and 11,750.64 is: 16,217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,179.04 : 29,230.58 = 11,750.64 : x
  2. Step 2: Convert to fraction form
    21,179.04/29,230.58 = 11,750.64/x
  3. Step 3: Cross multiply
    21,179.04x = 29,230.58 × 11,750.64
  4. Step 4: Simplify right side
    21,179.04x = 343,477,817.67
  5. Step 5: Solve for x
    x = 343,477,817.67/21,179.04
  6. Step 6: Final answer
    x = 16,217.82

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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.