Home / 33,159.87-45,748.08-21,221.28

Finding the Fourth Proportional to 33,159.87, 45,748.08 and 21,221.28

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Solution

The fourth proportional to 33,159.87, 45,748.08 and 21,221.28 is: 29,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,159.87 : 45,748.08 = 21,221.28 : x
  2. Step 2: Convert to fraction form
    33,159.87/45,748.08 = 21,221.28/x
  3. Step 3: Cross multiply
    33,159.87x = 45,748.08 × 21,221.28
  4. Step 4: Simplify right side
    33,159.87x = 970,832,815.14
  5. Step 5: Solve for x
    x = 970,832,815.14/33,159.87
  6. Step 6: Final answer
    x = 29,277.34

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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.