Home / 33,213.74-45,809.01-21,278.21

Finding the Fourth Proportional to 33,213.74, 45,809.01 and 21,278.21

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Solution

The fourth proportional to 33,213.74, 45,809.01 and 21,278.21 is: 29,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,213.74 : 45,809.01 = 21,278.21 : x
  2. Step 2: Convert to fraction form
    33,213.74/45,809.01 = 21,278.21/x
  3. Step 3: Cross multiply
    33,213.74x = 45,809.01 × 21,278.21
  4. Step 4: Simplify right side
    33,213.74x = 974,733,505.63
  5. Step 5: Solve for x
    x = 974,733,505.63/33,213.74
  6. Step 6: Final answer
    x = 29,347.30

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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.