Home / 14,781.86-20,393.82-9,479.60

Finding the Fourth Proportional to 14,781.86, 20,393.82 and 9,479.60

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Solution

The fourth proportional to 14,781.86, 20,393.82 and 9,479.60 is: 13,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,781.86 : 20,393.82 = 9,479.60 : x
  2. Step 2: Convert to fraction form
    14,781.86/20,393.82 = 9,479.60/x
  3. Step 3: Cross multiply
    14,781.86x = 20,393.82 × 9,479.60
  4. Step 4: Simplify right side
    14,781.86x = 193,325,256.07
  5. Step 5: Solve for x
    x = 193,325,256.07/14,781.86
  6. Step 6: Final answer
    x = 13,078.55

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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.