Home / 21,705.12-29,950.56-12,273.84

Finding the Fourth Proportional to 21,705.12, 29,950.56 and 12,273.84

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Solution

The fourth proportional to 21,705.12, 29,950.56 and 12,273.84 is: 16,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.12 : 29,950.56 = 12,273.84 : x
  2. Step 2: Convert to fraction form
    21,705.12/29,950.56 = 12,273.84/x
  3. Step 3: Cross multiply
    21,705.12x = 29,950.56 × 12,273.84
  4. Step 4: Simplify right side
    21,705.12x = 367,608,381.35
  5. Step 5: Solve for x
    x = 367,608,381.35/21,705.12
  6. Step 6: Final answer
    x = 16,936.48

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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.