Home / 20,977.35-31,476.96-8,506.59

Finding the Fourth Proportional to 20,977.35, 31,476.96 and 8,506.59

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Solution

The fourth proportional to 20,977.35, 31,476.96 and 8,506.59 is: 12,764.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,977.35 : 31,476.96 = 8,506.59 : x
  2. Step 2: Convert to fraction form
    20,977.35/31,476.96 = 8,506.59/x
  3. Step 3: Cross multiply
    20,977.35x = 31,476.96 × 8,506.59
  4. Step 4: Simplify right side
    20,977.35x = 267,761,593.17
  5. Step 5: Solve for x
    x = 267,761,593.17/20,977.35
  6. Step 6: Final answer
    x = 12,764.32

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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.