Home / 20,890.30-31,348.21-9,047.24

Finding the Fourth Proportional to 20,890.30, 31,348.21 and 9,047.24

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Solution

The fourth proportional to 20,890.30, 31,348.21 and 9,047.24 is: 13,576.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,890.30 : 31,348.21 = 9,047.24 : x
  2. Step 2: Convert to fraction form
    20,890.30/31,348.21 = 9,047.24/x
  3. Step 3: Cross multiply
    20,890.30x = 31,348.21 × 9,047.24
  4. Step 4: Simplify right side
    20,890.30x = 283,614,734.20
  5. Step 5: Solve for x
    x = 283,614,734.20/20,890.30
  6. Step 6: Final answer
    x = 13,576.39

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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.