Home / 11,720.32-17,580.80-3,512.32

Finding the Fourth Proportional to 11,720.32, 17,580.80 and 3,512.32

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Solution

The fourth proportional to 11,720.32, 17,580.80 and 3,512.32 is: 5,268.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,720.32 : 17,580.80 = 3,512.32 : x
  2. Step 2: Convert to fraction form
    11,720.32/17,580.80 = 3,512.32/x
  3. Step 3: Cross multiply
    11,720.32x = 17,580.80 × 3,512.32
  4. Step 4: Simplify right side
    11,720.32x = 61,749,395.46
  5. Step 5: Solve for x
    x = 61,749,395.46/11,720.32
  6. Step 6: Final answer
    x = 5,268.58

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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.