Home / 30,777.94-42,470.49-18,844.66

Finding the Fourth Proportional to 30,777.94, 42,470.49 and 18,844.66

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Solution

The fourth proportional to 30,777.94, 42,470.49 and 18,844.66 is: 26,003.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,777.94 : 42,470.49 = 18,844.66 : x
  2. Step 2: Convert to fraction form
    30,777.94/42,470.49 = 18,844.66/x
  3. Step 3: Cross multiply
    30,777.94x = 42,470.49 × 18,844.66
  4. Step 4: Simplify right side
    30,777.94x = 800,341,944.08
  5. Step 5: Solve for x
    x = 800,341,944.08/30,777.94
  6. Step 6: Final answer
    x = 26,003.75

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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.