Home / 21,343.45-29,453.63-11,783.42

Finding the Fourth Proportional to 21,343.45, 29,453.63 and 11,783.42

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Solution

The fourth proportional to 21,343.45, 29,453.63 and 11,783.42 is: 16,260.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,343.45 : 29,453.63 = 11,783.42 : x
  2. Step 2: Convert to fraction form
    21,343.45/29,453.63 = 11,783.42/x
  3. Step 3: Cross multiply
    21,343.45x = 29,453.63 × 11,783.42
  4. Step 4: Simplify right side
    21,343.45x = 347,064,562.76
  5. Step 5: Solve for x
    x = 347,064,562.76/21,343.45
  6. Step 6: Final answer
    x = 16,260.94

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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.