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Finding the Fourth Proportional to 32,873.70, 45,330.03 and 20,921.74

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Solution

The fourth proportional to 32,873.70, 45,330.03 and 20,921.74 is: 28,849.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,873.70 : 45,330.03 = 20,921.74 : x
  2. Step 2: Convert to fraction form
    32,873.70/45,330.03 = 20,921.74/x
  3. Step 3: Cross multiply
    32,873.70x = 45,330.03 × 20,921.74
  4. Step 4: Simplify right side
    32,873.70x = 948,383,243.51
  5. Step 5: Solve for x
    x = 948,383,243.51/32,873.70
  6. Step 6: Final answer
    x = 28,849.30

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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.