Home / 20,324.01-30,638.34-18,969.28

Finding the Fourth Proportional to 20,324.01, 30,638.34 and 18,969.28

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Solution

The fourth proportional to 20,324.01, 30,638.34 and 18,969.28 is: 28,596.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,324.01 : 30,638.34 = 18,969.28 : x
  2. Step 2: Convert to fraction form
    20,324.01/30,638.34 = 18,969.28/x
  3. Step 3: Cross multiply
    20,324.01x = 30,638.34 × 18,969.28
  4. Step 4: Simplify right side
    20,324.01x = 581,187,250.20
  5. Step 5: Solve for x
    x = 581,187,250.20/20,324.01
  6. Step 6: Final answer
    x = 28,596.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.