Home / 15,086.77-20,820.98-8,372.27

Finding the Fourth Proportional to 15,086.77, 20,820.98 and 8,372.27

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Solution

The fourth proportional to 15,086.77, 20,820.98 and 8,372.27 is: 11,554.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.77 : 20,820.98 = 8,372.27 : x
  2. Step 2: Convert to fraction form
    15,086.77/20,820.98 = 8,372.27/x
  3. Step 3: Cross multiply
    15,086.77x = 20,820.98 × 8,372.27
  4. Step 4: Simplify right side
    15,086.77x = 174,318,939.21
  5. Step 5: Solve for x
    x = 174,318,939.21/15,086.77
  6. Step 6: Final answer
    x = 11,554.43

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.