Home / 30,908.64-42,674.40-18,337.44

Finding the Fourth Proportional to 30,908.64, 42,674.40 and 18,337.44

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Solution

The fourth proportional to 30,908.64, 42,674.40 and 18,337.44 is: 25,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.64 : 42,674.40 = 18,337.44 : x
  2. Step 2: Convert to fraction form
    30,908.64/42,674.40 = 18,337.44/x
  3. Step 3: Cross multiply
    30,908.64x = 42,674.40 × 18,337.44
  4. Step 4: Simplify right side
    30,908.64x = 782,539,249.54
  5. Step 5: Solve for x
    x = 782,539,249.54/30,908.64
  6. Step 6: Final answer
    x = 25,317.82

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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.