Home / 21,420.78-32,096.61-13,195.50

Finding the Fourth Proportional to 21,420.78, 32,096.61 and 13,195.50

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Solution

The fourth proportional to 21,420.78, 32,096.61 and 13,195.50 is: 19,771.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.78 : 32,096.61 = 13,195.50 : x
  2. Step 2: Convert to fraction form
    21,420.78/32,096.61 = 13,195.50/x
  3. Step 3: Cross multiply
    21,420.78x = 32,096.61 × 13,195.50
  4. Step 4: Simplify right side
    21,420.78x = 423,530,817.26
  5. Step 5: Solve for x
    x = 423,530,817.26/21,420.78
  6. Step 6: Final answer
    x = 19,771.96

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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.