Home / 33,220.72-45,818.64-21,285.22

Finding the Fourth Proportional to 33,220.72, 45,818.64 and 21,285.22

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Solution

The fourth proportional to 33,220.72, 45,818.64 and 21,285.22 is: 29,356.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,220.72 : 45,818.64 = 21,285.22 : x
  2. Step 2: Convert to fraction form
    33,220.72/45,818.64 = 21,285.22/x
  3. Step 3: Cross multiply
    33,220.72x = 45,818.64 × 21,285.22
  4. Step 4: Simplify right side
    33,220.72x = 975,259,832.50
  5. Step 5: Solve for x
    x = 975,259,832.50/33,220.72
  6. Step 6: Final answer
    x = 29,356.97

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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.