Home / 20,391.40-30,576.30-7,244.20

Finding the Fourth Proportional to 20,391.40, 30,576.30 and 7,244.20

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Solution

The fourth proportional to 20,391.40, 30,576.30 and 7,244.20 is: 10,862.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.40 : 30,576.30 = 7,244.20 : x
  2. Step 2: Convert to fraction form
    20,391.40/30,576.30 = 7,244.20/x
  3. Step 3: Cross multiply
    20,391.40x = 30,576.30 × 7,244.20
  4. Step 4: Simplify right side
    20,391.40x = 221,500,832.46
  5. Step 5: Solve for x
    x = 221,500,832.46/20,391.40
  6. Step 6: Final answer
    x = 10,862.46

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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.