Home / 18,778.86-25,913.05-11,223.68

Finding the Fourth Proportional to 18,778.86, 25,913.05 and 11,223.68

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Solution

The fourth proportional to 18,778.86, 25,913.05 and 11,223.68 is: 15,487.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,778.86 : 25,913.05 = 11,223.68 : x
  2. Step 2: Convert to fraction form
    18,778.86/25,913.05 = 11,223.68/x
  3. Step 3: Cross multiply
    18,778.86x = 25,913.05 × 11,223.68
  4. Step 4: Simplify right side
    18,778.86x = 290,839,781.02
  5. Step 5: Solve for x
    x = 290,839,781.02/18,778.86
  6. Step 6: Final answer
    x = 15,487.62

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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.