Home / 20,164.86-27,747.77-18,278.60

Finding the Fourth Proportional to 20,164.86, 27,747.77 and 18,278.60

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Solution

The fourth proportional to 20,164.86, 27,747.77 and 18,278.60 is: 25,152.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,164.86 : 27,747.77 = 18,278.60 : x
  2. Step 2: Convert to fraction form
    20,164.86/27,747.77 = 18,278.60/x
  3. Step 3: Cross multiply
    20,164.86x = 27,747.77 × 18,278.60
  4. Step 4: Simplify right side
    20,164.86x = 507,190,158.59
  5. Step 5: Solve for x
    x = 507,190,158.59/20,164.86
  6. Step 6: Final answer
    x = 25,152.18

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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.