Home / 20,541.32-28,345.71-11,589.60

Finding the Fourth Proportional to 20,541.32, 28,345.71 and 11,589.60

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Solution

The fourth proportional to 20,541.32, 28,345.71 and 11,589.60 is: 15,992.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,541.32 : 28,345.71 = 11,589.60 : x
  2. Step 2: Convert to fraction form
    20,541.32/28,345.71 = 11,589.60/x
  3. Step 3: Cross multiply
    20,541.32x = 28,345.71 × 11,589.60
  4. Step 4: Simplify right side
    20,541.32x = 328,515,440.62
  5. Step 5: Solve for x
    x = 328,515,440.62/20,541.32
  6. Step 6: Final answer
    x = 15,992.91

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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.