Home / 21,192.84-29,245.61-11,761.40

Finding the Fourth Proportional to 21,192.84, 29,245.61 and 11,761.40

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Solution

The fourth proportional to 21,192.84, 29,245.61 and 11,761.40 is: 16,230.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,192.84 : 29,245.61 = 11,761.40 : x
  2. Step 2: Convert to fraction form
    21,192.84/29,245.61 = 11,761.40/x
  3. Step 3: Cross multiply
    21,192.84x = 29,245.61 × 11,761.40
  4. Step 4: Simplify right side
    21,192.84x = 343,969,353.81
  5. Step 5: Solve for x
    x = 343,969,353.81/21,192.84
  6. Step 6: Final answer
    x = 16,230.45

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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.