Home / 20,977.70-31,466.63-8,497.96

Finding the Fourth Proportional to 20,977.70, 31,466.63 and 8,497.96

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Solution

The fourth proportional to 20,977.70, 31,466.63 and 8,497.96 is: 12,746.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.70 : 31,466.63 = 8,497.96 : x
  2. Step 2: Convert to fraction form
    20,977.70/31,466.63 = 8,497.96/x
  3. Step 3: Cross multiply
    20,977.70x = 31,466.63 × 8,497.96
  4. Step 4: Simplify right side
    20,977.70x = 267,401,963.25
  5. Step 5: Solve for x
    x = 267,401,963.25/20,977.70
  6. Step 6: Final answer
    x = 12,746.97

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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.