Home / 21,789.34-32,682.11-13,470.64

Finding the Fourth Proportional to 21,789.34, 32,682.11 and 13,470.64

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Solution

The fourth proportional to 21,789.34, 32,682.11 and 13,470.64 is: 20,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,789.34 : 32,682.11 = 13,470.64 : x
  2. Step 2: Convert to fraction form
    21,789.34/32,682.11 = 13,470.64/x
  3. Step 3: Cross multiply
    21,789.34x = 32,682.11 × 13,470.64
  4. Step 4: Simplify right side
    21,789.34x = 440,248,938.25
  5. Step 5: Solve for x
    x = 440,248,938.25/21,789.34
  6. Step 6: Final answer
    x = 20,204.79

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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.