Home / 11,321.37-16,985.43-5,402.70

Finding the Fourth Proportional to 11,321.37, 16,985.43 and 5,402.70

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Solution

The fourth proportional to 11,321.37, 16,985.43 and 5,402.70 is: 8,105.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.37 : 16,985.43 = 5,402.70 : x
  2. Step 2: Convert to fraction form
    11,321.37/16,985.43 = 5,402.70/x
  3. Step 3: Cross multiply
    11,321.37x = 16,985.43 × 5,402.70
  4. Step 4: Simplify right side
    11,321.37x = 91,767,182.66
  5. Step 5: Solve for x
    x = 91,767,182.66/11,321.37
  6. Step 6: Final answer
    x = 8,105.66

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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.