Home / 20,772.10-31,148.07-9,676.18

Finding the Fourth Proportional to 20,772.10, 31,148.07 and 9,676.18

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Solution

The fourth proportional to 20,772.10, 31,148.07 and 9,676.18 is: 14,509.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,772.10 : 31,148.07 = 9,676.18 : x
  2. Step 2: Convert to fraction form
    20,772.10/31,148.07 = 9,676.18/x
  3. Step 3: Cross multiply
    20,772.10x = 31,148.07 × 9,676.18
  4. Step 4: Simplify right side
    20,772.10x = 301,394,331.97
  5. Step 5: Solve for x
    x = 301,394,331.97/20,772.10
  6. Step 6: Final answer
    x = 14,509.57

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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.