Home / 11,560.77-15,936.89-8,331.57

Finding the Fourth Proportional to 11,560.77, 15,936.89 and 8,331.57

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Solution

The fourth proportional to 11,560.77, 15,936.89 and 8,331.57 is: 11,485.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,560.77 : 15,936.89 = 8,331.57 : x
  2. Step 2: Convert to fraction form
    11,560.77/15,936.89 = 8,331.57/x
  3. Step 3: Cross multiply
    11,560.77x = 15,936.89 × 8,331.57
  4. Step 4: Simplify right side
    11,560.77x = 132,779,272.96
  5. Step 5: Solve for x
    x = 132,779,272.96/11,560.77
  6. Step 6: Final answer
    x = 11,485.33

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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.