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Finding the Fourth Proportional to 38,673.60, 57,955.05 and 21,998.40

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Solution

The fourth proportional to 38,673.60, 57,955.05 and 21,998.40 is: 32,966.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,673.60 : 57,955.05 = 21,998.40 : x
  2. Step 2: Convert to fraction form
    38,673.60/57,955.05 = 21,998.40/x
  3. Step 3: Cross multiply
    38,673.60x = 57,955.05 × 21,998.40
  4. Step 4: Simplify right side
    38,673.60x = 1,274,918,371.92
  5. Step 5: Solve for x
    x = 1,274,918,371.92/38,673.60
  6. Step 6: Final answer
    x = 32,966.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.