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Finding the Fourth Proportional to 33,057.60, 45,604.20 and 19,621.20

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Solution

The fourth proportional to 33,057.60, 45,604.20 and 19,621.20 is: 27,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,057.60 : 45,604.20 = 19,621.20 : x
  2. Step 2: Convert to fraction form
    33,057.60/45,604.20 = 19,621.20/x
  3. Step 3: Cross multiply
    33,057.60x = 45,604.20 × 19,621.20
  4. Step 4: Simplify right side
    33,057.60x = 894,809,129.04
  5. Step 5: Solve for x
    x = 894,809,129.04/33,057.60
  6. Step 6: Final answer
    x = 27,068.18

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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.