Home / 21,420.38-32,123.05-6,423.03

Finding the Fourth Proportional to 21,420.38, 32,123.05 and 6,423.03

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Solution

The fourth proportional to 21,420.38, 32,123.05 and 6,423.03 is: 9,632.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,420.38 : 32,123.05 = 6,423.03 : x
  2. Step 2: Convert to fraction form
    21,420.38/32,123.05 = 6,423.03/x
  3. Step 3: Cross multiply
    21,420.38x = 32,123.05 × 6,423.03
  4. Step 4: Simplify right side
    21,420.38x = 206,327,297.78
  5. Step 5: Solve for x
    x = 206,327,297.78/21,420.38
  6. Step 6: Final answer
    x = 9,632.29

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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.