Home / 21,977.60-33,004.80-21,286.40

Finding the Fourth Proportional to 21,977.60, 33,004.80 and 21,286.40

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Solution

The fourth proportional to 21,977.60, 33,004.80 and 21,286.40 is: 31,966.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,977.60 : 33,004.80 = 21,286.40 : x
  2. Step 2: Convert to fraction form
    21,977.60/33,004.80 = 21,286.40/x
  3. Step 3: Cross multiply
    21,977.60x = 33,004.80 × 21,286.40
  4. Step 4: Simplify right side
    21,977.60x = 702,553,374.72
  5. Step 5: Solve for x
    x = 702,553,374.72/21,977.60
  6. Step 6: Final answer
    x = 31,966.79

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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.