Home / 40,128.64-55,374.24-23,132.32

Finding the Fourth Proportional to 40,128.64, 55,374.24 and 23,132.32

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Solution

The fourth proportional to 40,128.64, 55,374.24 and 23,132.32 is: 31,920.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,128.64 : 55,374.24 = 23,132.32 : x
  2. Step 2: Convert to fraction form
    40,128.64/55,374.24 = 23,132.32/x
  3. Step 3: Cross multiply
    40,128.64x = 55,374.24 × 23,132.32
  4. Step 4: Simplify right side
    40,128.64x = 1,280,934,639.44
  5. Step 5: Solve for x
    x = 1,280,934,639.44/40,128.64
  6. Step 6: Final answer
    x = 31,920.71

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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.